Six vehicles collided in northern Rohnert Park Wednesday morning, blocking Highway 101 lanes and causing extensive traffic issues, warned the CHP.

The crashes happened at about 7:35 a.m. on Highway 101 north between the Rohnert Park Expressway and Golf Course Drive, according to initial reports.

The extent of any injuries wasn't immediately clear.

The crash blocked the two left lanes and five tow trucks were responding.