WICHITA, Kan. (AP) — Sedgwick County authorities say diesel fuel has spilled from a semitrailer that crashed on a bridge.

Wichita-Sedgwick County 911 dispatchers said Thursday night that the driver suffered minor injuries in the crash that left the tanker hanging off the Wichita bridge. Hazardous materials crews were sent to contain the spill. It’s unclear how much fuel leaked.

The cause of the crash is unclear, and it’s unclear if there were other vehicles involved. The driver’s identity hasn’t been released.