Thomas Porfirio, 15, Emily Baker, 14, and Ashlin Baker, 12, killed in crash on Hinckley Road in Clinton, Maine

Police did not release the name of the driver but said that it was likely that his speed and inexperience were factors in the crash. Police also said that the boy did not have a driver's license.

Clarissa Sawyer, 31, of Corinna said she came upon the Hinckley Road crash just a minute or so after it happened. First responders had not yet arrived, and she went to help another couple that had witnessed the crash.

A late night joyride with an unlicensed driver behind the wheel preceded a fatal crash in central Maine that killed three youths and injured two others, police said Tuesday.

The celebration of 15-year-old Thomas Porfirio’s life was being held at the Williamson Performing Arts Center at the Lawrence High School and Junior High complex in Fairfield where he attended school.

Silva was arrested Thursday night. He is also charged with reckless conduct with a dangerous weapon, and driving to endanger causing serious bodily injury.

Timothy Silva, 17, of Clinton will be sentenced as a juvenile at a later date in a written order from District Court Judge Charles Dow. The judge did not say Friday when he would announce the sentence.