ANTIOCH, Calif. (AP) — A helicopter and a small plane were forced into emergency landings after they clipped each other over Northern California, leaving the two pilots with minor injuries, authorities say.

The accident occurred about 7 p. m. Sunday just north of Antioch, about halfway between Oakland and Sacramento along the Sacramento River, Federal Aviation Administration spokesman Ian Gregor said.

The two-seat Robinson R22 helicopter set down just off state Highway 160, while the six-seat Beechcraft Bonanza made a rough landing in a field just short of an airport, the officials said.

There was no immediate information on what caused the accident.