The family of a Dallas Police Department motor officer killed during a 2008 motorcade during Hillary Clinton's presidential campaign has filed a negligence lawsuit against the secretary of state.

The family of Victor Lozada filed the suit, which was first reported by legal blog Tex Parte. The suit names Clinton, her campaign organization, the city of Dallas, and the helmet manufacturer.

Lozada, a 20-year Dallas PD veteran, was killed when he sped ahead of Clinton's motorcade to block traffic and slammed into a concrete outcropping on the Houston Street viaduct near downtown Dallas.

Lozada's survivors allege that the Super Seer helmet Lozada was wearing was defective because the chin strap holding his helmet on disengaged during the crash.

Read the full report.