BRENTWOOD — Two people died late Wednesday night when two cars on state Highway 4 apparently collided head-on, the California Highway Patrol said.

The crash closed down the eastbound lanes of the highway overnight for about seven hours. The lanes re-opened again about 5:30 a.m. Thursday, according to the CHP.

Authorities said the drivers of the two cars were the ones who died in the crash. Authorities did not identify them immediately.

Officers from the CHP were called to the scene about 10:20 p.m. and found the two cars in the eastbound lanes, the CHP said. Investigators have not determined what caused the crash.

Please check back for updates.