In the first case, two men forced their way into an apartment on Floyd Street in Deer Park and pistol-whipped a woman who was a visitor shortly before 2 p.m. Tuesday, police said.

Then shortly after 8 p.m. Tuesday, three men armed with handguns forced their way into a home on Southaven Avenue in Medford and confronted a resident inside, police said.

The attackers in the first case stole a cell phone. The assailants in the second case made off with cash, cigarettes and an iPod.

There were neither arrests nor description of the suspects in either case. Police do not believe the two to be linked.

The back-to-back cases come after a string of 13 armed home invasions in Suffolk in the first three months of this year, three of which involved shootings, one fatal.

Nassau County police meanwhile have reported seven armed home invasions so far this year.

They include unsolved cases in North Woodmere this week, in Elmont last week, as well as three in March in Baldwin, Roosevelt and Hempstead.

Nassau police also arrested alleged home invasion suspects last month in Farmingdale and three attempted Elmont home invasion suspects in February.

A 35-year-old woman was home with her infant son and a 52-year-old woman when the gunman used the ruse to force his way into the house on Barbara Street shortly before 3 p.m., police said.

He tied the women up with plastic ties, ransacked the house and stole jewelry, credit cards, liquor and other items before fleeing on foot, police said.  The victims were not injured.

The suspect was described as a 6-foot-tall black man, 20 to 25 years old with a slim build, wearing a brown UPS jacket, jeans and a brown skull cap.

Fourth Squad detectives ask anyone with information regarding this crime to contact Crime Stoppers at 1-800-244-TIPS.  All callers will remain anonymous.

Nassau County police arrested Tricia Mercier and charged her with burglary, assault, criminal contempt, criminal mischief and criminal possession of a weapon.

Police said Mercier made repeated calls that authorities described as “alarming in nature” to the victim, who later heard a horn honk outside his home and the suspect sitting in her car at 6:30 p.m.

Mercier allegedly walked into the victim’s apartment and struck him in the face with a pair of pliers, breaking his glasses.

The victim was taken to an area hospital for treatment of bruising and lacerations.

Mercier was taken into custody at the scene and will be arraigned Wednesday at First District Court in Hempstead.

Kevin Pierre-Paul

Update: Kevin Pierre-Paul has been found.

Nassau County police are asking for the public’s help in locating a 23-year-old Elmont man who has been reported missing.

Police said Kevin Pierre-Paul was last seen leaving his Sterling Road home at 12:40 a.m. Monday.

Pierre-Paul was described as 5-feet, 11-inches tall, 160 pounds with black hair and brown eyes.

He was last seen wearing black hooded sweatshirt and blue jeans. Police noted that he needs medication.

Detectives ask anyone with information regarding this missing person to contact Crime Stoppers at 1-800-244-TIPS.  All callers will remain anonymous.

A 41-year-old man was sitting in his parked car in front of his Kingston Avenue home when a man with his face covered opened the car door, ordered the victim out and displayed a black handgun at 12:25 a.m., police said.

The victim pulled the door closed and drove away. The would-be robber fled on foot eastbound on Freeman Avenue.

Fourth Squad detectives request that anyone with information regarding this crime to contact Crime Stoppers at 1-800-244-TIPS. All callers will remain anonymous.

Narcotics/Vice Bureau detectives executed a search warrant on the couple’s Times Avenue home following an undercover operation. They found 1,534 bags of heroine, 50 pills of Alprazolam, and an undetermined amount of cash inside.

Thomas Mckinley, 53, and his 61-year-old wife, Lorraine Bianchini, were each charged with criminal possession of a controlled substance. Mckinley was additionally charged with criminal sale of a controlled substance.

Two alleged buyers, 26-year-old Maggie Caballero of East Rockaway and 25-year-old Grant Marshall of Copiague, were arrested for heroin possession after police said they bought from the couple before the raid.

Caballero and Marshall were also charged with criminal possession of a controlled substance.

All four will be arraigned Tuesday at First District Court in Hempstead.

Thomas Kelly

UPDATE: Thomas Kelly has been found.

Nassau County police are asking for the public’s help in locating a 62-year-old man who was reported missing in Elmont over the weekend.

Police said Thomas Kelly was last seen on Covert Avenue shortly before 9 a.m. Friday.

He is described as 5-feet, 11-inches tall, 155 pounds with salt and pepper hair and blue eyes.

It is not clear what he was wearing at the time of his disappearance. Police noted that Kelly needs medication.

Detectives request anyone with information regarding this crime to contact Crime Stoppers at 1-800-244-TIPS.  All callers will remain anonymous.

Andrew Schreier

A teenager has been accused of flashing a badge and what appeared to be a handgun at another driver while impersonating a police officer during a road-rage confrontation in Elmont on Monday afternoon.

Nassau County police said Andrew Schreier was driving on Elmont Road when he pulled alongside a vehicle driven by a 29-year-old man, rolled his window down and flashed a gold badge at 3 p.m.

“I’m a cop, and I’ll give you tickets,” the 19-year-old Elmont man allegedly yelled at the victim before pointing the weapon at the other driver and the victim’s 47-year-old passenger, according to police.

The victims called 911, followed Schreier into a dead end and led responding officers to him with the help of a neighbor, police said.

Schreier was found to have glass bottle in his shoe that contained a substance believed to be MDMA, the active intoxicant in the club drug ecstasy.

The gun that he allegedly menaced the victims with turned out to be a black airsoft pistol, which investigators also recovered, police said. The badge he flashed was from the U.S. Postal Police, Nassau police said.

The teen was also in possession of a forged New Jersey license, a forged Department of Homeland Security photo identification and two Federation of Postal Police photo IDs, police said.

Schreier was charged with criminal possession of a controlled substance, forgery, criminal impersonation, menacing and possession of a dangerous weapon. He will be arraigned Tuesday at First District Court in Hempstead.

Nazir Babury, 20, of Elmont, 36-year-old Jason Mifsud of Woodmere and 22-year-old Dujon Ellis of Laurelton were charged with burglary and criminal use of a firearm.

Police also charged Babury and Mifsud with stealing a rifle during the burglary of a Baldwin home on Wednesday.

Barbury was additionally charged with reckless endangerment for shooting the rifle at a 22-year-old man Friday in Woodsburgh after the suspect and the victim got into an argument in the Mazda they were in, police said.

Barbury missed and the victim was not injured as he ran away, police said.

All three will be arraigned Sunday at First District Court in Hempstead.

The 54-year-old victim was asleep in his Kirkman Avenue home when he was awakened by his front doorbell ringing, then  heard a loud bang and someone trying to break in as he went to answer the door at 6:16 a.m., police said.

“The victim held the door shut while one of the subjects’ threatens the use of a weapon,” police said in a news release.

The victim screamed and the two men, one of whom was armed with a rifle, fled the scene toward Meacham Avenue in a silver Honda driven by a third man.

The two suspects were described as black men between 17 and 20 years old who were wearing dark masks, dark colored sweatshirts and blue jeans.  The victim was not injured.

The case comes as there have been 11 armed home invasions in a recent four-week span in neighboring Suffolk County.

Fourth Squad detectives ask anyone with information regarding this crime to contact Crime Stoppers at 1-800-244-TIPS.  All callers will remain anonymous.