Police are investigating a home invasion Wednesday night in Uniondale.

A 29-year-old man arrived at his Walton Avenue home at 7:30 p.m. to find his rear door open, Nassau County police said in a Thursday news release.

He went inside and was approached by four men, who ordered him to get on the ground, police said.

One of the suspects displayed a handgun, "and the subjects removed proceeds that included a cellphone, wallet and an undetermined amount of" cash, police said.

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The suspects then fled, police said, adding that the victim was not injured.

Anyone with information is urged to anonymously call Nassau County Crime Stoppers at 800-244-TIPS.