A handcuffed kidnapping victim used a cell phone to call for help from the trunk of a car yesterday morning, police said.

His alleged kidnappers, an 18-year-old Aiea Heights man and a 19-year-old Salt Lake man, were arrested after police dispatchers sent officers to Salt Lake, the location of the cell phone tower that picked up the victim's cell phone signal.

The drama began at about 9:30 a.m. in Waiau District Park when a witness called police after seeing two men grab a 17-year-old boy by his arms and legs and stuff him in the trunk of a white four-door sedan, said Pearl City police Sgt. Mel Conjugacion.

The victim used his cell phone to call his mother and police for help from the trunk, Conjugacion said.

Based on witness' description of the car and the boy's cell phone signal, officers located the suspects and the car near Salt Lake Boulevard and Bougainville Drive about 11:30 a.m., police said.

The victim wasn't inside the trunk, but police located him about five minutes later after he knocked on a door in Moanalua Valley, wearing handcuffs. His mother took him to Kaiser Hospital for treatment of injuries, police said.

Witnesses and the victim identified the men as the kidnappers, and police arrested them for suspicion of kidnapping about half an hour after they were stopped, Conjugacion said.

Police are still trying to determine the motive for the alleged kidnapping.