UPDATE: Two Amber Alert Girls Safe, Father Committed Suicide in New York Motel Room

The Old Bridge man who police say abducted his two daughters after allegedly being involved in the death of their mother has been found dead himself after committing suicide in an upstate New York motel.

The two daughters of Anthony Trapp—20-month-old Sophia and 5-year-old Emma—were found safe and unharmed, New York State Police said. 

Trapp, 39, had run off in his ex-wife's 2010 Nissan Rogue, along with their two young daughters, at around 4:30 p.m. on Thursday, police said. His ex-wife, Heather Trapp, had come to his Old Bridge home to pick up the children. When she didn't contact her relatives later that evening, they called police who visited Trapp's home and found Heather Trapp's body.

N.J. State Police issued an Amber Alert for the girls at around 1 a.m. on Friday.

Meanwhile, Trapp had driven to Bear Mountain Bridge Motel in Fort Montgomery, N.Y., police said, where he took a room with his daughters. 

Chris Thorpe, senior investigator with the New York State Police, said they received a phone call from the motel manager at about 4:30 a.m. early Friday, notifying them that a man who fit Trapp's description was staying in one of the motel rooms.

Trapp apparently let the two girls go at 7:30 a.m.

"The girls came out of the room on their own," Thorpe said.

Trapp himself did not surrender to police. Thorpe said that police had a response unit at the motel and were trying to establish contact with Trapp to get him to give himself up.

At around 9:15 a.m., Thorpe said, Trapp's body was found in the motel room.

Thorpe did not say if anything precipitated the police entering the motel room, or how they knew that Trapp was dead or incapacitated. Trapp was initially considered to be armed and dangerous, and was believed to have a knife.

The cause of death for Heather Trapp and Anthony Trapp has not been released pending autopsies, Jim O'Neill of the Middlesex County Prosecutor's Office said.

The two young girls are in the custody of child protective services and have been taken to the hospital for examinations.