A man who died Tuesday after crashing his car into a vehicle carrying four Secret Service agents in New Hampshire was driving without a valid license and had an "extensive" criminal history, authorities said.

Bruce Danforth, 45, was driving with two passengers in a four-door Mercury Sable headed north on Route 16 early Tuesday evening when his car crossed into oncoming traffic and slammed into a Ford Taurus carrying the on-duty Secret Service agents, police said in a statement.

Danforth, who died at the scene, lacked a valid license and "was known to this department and has an extensive criminal history," the Wakefield Police Department said. Danforth's two passengers - Natasha Meroski, 35, and Kristina Buswell, 21 - were taken to area hospitals, as were the four Secret Service agents.

"At this time, our personnel have sustained what is described as serious, but non-life-threatening injuries," Secret Service Director Joseph Clancy said in a statement. "Please join us as we keep all the victims of this accident and their families in our thoughts and prayers."

The Secret Service agents did not belong to any particular candidate's protective detail, but instead were part of a "jump team," working as additional security and standing post at campaign events. They were en route from one campaign event to another at the time of the accident, a government official said.

All are believed to have worked in New England field offices.

Hillary Clinton was traveling between campaign stops in the area around the same time as the accident, greeting a crowd in Berlin, N.H., by describing the drive to the town hall as challenging. New Hampshire saw its first big snow of the season Tuesday, making roads dangerous throughout the state.