Two teenage brothers from Central New Jersey murdered a man then drove to a rural stretch of upper Bucks County in the middle of the night to dump his body in the woods, prosecutors said Thursday.

The crime might have gone undetected, authorities said, if Joshua and Anthony Gamble had not turned on their hazard lights after parking two cars on the side of East Pumping Station Road in Richland Township around midnight Wednesday. A passing Pennsylvania State Trooper, thinking a driver was in distress, stopped to assist.

Instead, he found blood stains and a bloodied knife in one of the cars, and one of the teens hiding in the grass nearby. The body of a man with multiple stab wounds on his neck, head, and arms was a few hundred yards away, according to Bucks County District Attorney Matthew Weintraub.

The victim was identified as Kevin Rosero, 26. It remained unclear Friday how he knew the suspects, or what motivated the slaying.

Both Joshua Gamble, 17, and Anthony Gamble, 19, remained in custody, denied bail due to the nature of the charges they face. They have been charged with murder, conspiracy, possession of an instrument of a crime, and tampering with evidence.

The younger Gamble will be prosecuted as an adult, Weintraub said.

Investigators believe the brothers drove about an hour from their hometown of Somerset to Richland Township, stopping 20 minutes before they encountered the trooper to buy work gloves and disinfectant wipes at a nearby 7-Eleven. One of the two cars found at the scene was a Subaru sedan registered to Jonathan Gamble, a relative of the brothers, according to court documents. The second, which was bloodstained, was a rented Audi sedan, according to Weintraub.

Joshua Gamble initially tried to hide from the trooper by lying in a grassy area near the vehicles but was taken into custody, Weintraub said. His older brother tried to flee in the Subaru, but also was apprehended.

Both brothers’ shoes were covered in blood, and both were carrying the work gloves they had purchased at 7-Eleven, similarly stained with blood, the prosecutor said.