HOBOKEN, N.J. (CBSNewYork) — Three teenagers were in custody Saturday morning, on charges of beating a homeless man to his death in Hoboken, N.J.

As CBS 2’s Janelle Burrell reported, Hudson County Acting Prosecutor Gaetano T. Gregory said two 13-year-olds and a 14-year-old were charged in the Sept. 10 death of Ralph Eric Santiago, 46.

Police believe the teens were playing a sick game.