Two male teenagers, one the son of a Philadelphia police sergeant, died early yesterday morning after their vehicle crossed lanes of traffic on northbound Roosevelt Boulevard and hit a light standard and a tree.

Police declined to release the identities of the driver, 19, of Northeast Philadelphia, and the passenger, 18, of Bensalem. The driver was the son of the police sergeant.

Police were still investigating yesterday why the driver lost control of the 2003 Honda about 3:25 a.m. between Bridge and Pratt Streets. No other cars were involved.

The driver died at the scene of the accident; the passenger was pronounced dead at Albert Einstein Medical Center.

- Susan Snyder