YONKERS - Two teenagers were showing off a gun on Sunday when it went off and fatally struck one of them in the chest, police said today.

Yonkers police said Horace Allen, a 17-year-old Bronx resident, fired the loaded handgun at Joseph Kuaffo, a 16-year-old Yonkers resident, inside Kuaffo's Warburton Avenue home on Sunday.

Kuaffo was rushed to the hospital where he was pronounced dead.

Allen fled but was later arrested and charged with second-degree manslaughter and second-degree criminal possession of a weapon, according to a complaint filed in Yonkers City Court on Wednesday.

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Police said detectives found a semi-automatic handgun that appeared to have been used in the shooting.

Allen is accused of "recklessly" causing Kuaffo's death with a 9 mm handgun, according to the complaint.

Allen was arraigned in Yonkers City Court and is due back on Oct. 12. He is being held without bail at the Westchester County jail.

Twitter: @MattSpillane