Multiple people were stabbed during a rally Sunday at the state capitol in Sacramento, California, the fire department said on Twitter.

Five people were transported to area hospitals after the “mass casualty incident,” some with critical trauma stab wounds, the fire department said.

The Sacramento Police Department said on Twitter it had closed some areas to traffic during a protest at the capital and in a second message said it had a public information officer on scene at the capitol.

Television footage on the Sacramento Bee website appeared to show a confrontation between a crowd dressed in black and a camera man and a television reporter though it was not clear if this was the same incident that produced the stabbings.

The Bee said “anti-fascist protesters” had confronted a TV crew from KCRA, Sacramento, at the capitol.