CLAYTON, N.J. — A teenage boy lured a 12-year-old girl into his house under the guise of getting parts for her treasured bicycle and then, with his older brother, killed her, police said Tuesday. The girl’s disappearance had sparked a frantic search by residents of her small town until a tip from the boys’ mother led police to her body, stuffed into a home recycling bin.

The boys, ages 15 and 17, were charged with murdering Autumn Pasquale, who disappeared while riding her BMX bike Saturday, a little more than a week before what would have been her 13th birthday. She appeared to have been strangled, Gloucester County prosecutor Sean Dalton said at a late-day news conference.

The boys’ mother had come forward with information about a posting on a son’s Facebook account, Dalton said. He said there was no sign of sexual assault.

Autumn was lured to the house, where they apparently lived with their mother and stepfather, for the purpose of getting parts for her bike, which she rode frequently and talked about on Facebook.

Both brothers were charged with counts including first-degree murder, body disposal and tampering with evidence. The 15-year-old was also charged with luring.

The boys’ names were not released because they are juveniles, but Dalton said his office is considering trying to have the case transferred to adult court. The boys turned themselves in with their attorneys, public defenders.

The girl’s body was found around 10 p.m. Monday in a recycling bin on a vacant property next to the home where the boys live, police said. The suspects had attended a community vigil for her shortly before the discovery, several residents said.

Autumn’s bike and other belongings were recovered from the boys’ home, the prosecutor said. The home is just blocks from hers.