MAYS LANDING — A 17-year-old tried as an adult was convicted Thursday in the Christmas 2011 knifepoint robbery of another teenage boy in a Somers Point park.

Lation Jensen, 17, of Somers Point, was convicted for conspiring with his 21-year-old brother, Warren Jensen, also of Somers Point, to lure the victim to the Jordan Road School Park and attacking him from behind.

Lation Jensen was convicted of armed robbery for holding a knife to the teen’s throat, and robbing him of his Christmas gifts — an iPhone and set of earphones, acting Atlantic County Prosecutor Jim McClain announced.

Somers Point police arrested both Jensens the day of the robbery, and recover the knife used in the crime. Detective Jack Sementa of Somers Point Police Department was the lead detective on the case.

Warren Jensen was charged with robbery, conspiracy, and employing a juvenile in the commission of a crime, and pleaded guilty this past January to employing a juvenile in the commission of an armed robbery. He faces five to 10 years in prison when he is sentenced April 12 before Superior Court Judge Bernard DeLury.

Lation Jensen was charged as an adult in May 2012. He was convicted on all four charges, including armed robbery and conspiracy to commit armed robbery. He faces as long as 20 years in prison when he is sentenced before Superior Court Judge Albert Garofolo on July 1.