PENNSYLVANIA STATE POLICE say car accidents killed seven people and injured 315 others over the long holiday weekend.

From Dec. 21 through Christmas, state police investigated 1,336 crashes; 108 were alcohol-related.

Two of the seven people who died were not wearing seat belts. One fatality stemmed from an alcohol-related accident.

Troopers made 348 arrests for driving under the influence and issued 2,152 speeding citations.

In 2011, authorities reported five people died and 169 others were hurt in 509 crashes. Figures don't include statistics on crashes to which other law-enforcement agencies responded.