WALNUT CREEK -- A county bus and a pick-up truck collided late Thursday afternoon on northbound Interstate 680, but fortunately no one was injured, according to CHP.

The accident was reported just after 5:30 p.m. near the Ygnacio Valley Road exit. The extent of the damage to the Contra Costa County Connection Link bus or the red Ford F-250 pick-up truck was not immediately known.

Both vehicles pulled over to the right hand side of the Interstate 680 off-ramp at Ygnacio Valley Road after the crash. Details on the cause were not provided.

Contact Katie Nelson at 925-945-4780 or follow her at Twitter.com/katienelson210.