Boy, 15, and girl, 17, are charged with murder after 'beating a homeless man to death in a New Jersey alleyway'

Two teenagers have been arrested for the beating death of a homeless man whose body was found in an New Jersey alleyway last week.

The 17-year-old girl and 15-year-old boy have been charged with first-degree murder in the killing of Bobby Hill Jr., 63, in Camden last Thursday, according to acting Camden County Prosecutor Jill Mayer. 

Police found the victim's body in an alleyway near the 1100 block of Kaighn Avenue shortly after midnight. 

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A 17-year-old girl and a 15-year-old boy have been charged with murder for allegedly beating homeless man Bobby Hill Jr to death in an alley near the 1100 block of Kaighn Avenue in Camden, New Jersey (pictured)

The medical examiner determined that Hill died of blunt force trauma to the head after being beaten to death.

The prosecutor's office said that in the course of the investigation, surveillance footage was discovered showing the two teens entering the alleyway with Hill. 

Several minutes later, they were filmed leaving the area without Hill.

Detectives also retrieved video footage from a cellphone belonging to one of the suspects showing Hill’s body laying in the alleyway after the beating, prosecutors said.

Hill was transported to an area hospital, where he died from severe injuries to his head.  

A motive for the attack has not been disclosed.

The two teens remained in custody. Their names are not being released because they are minors.