“He came in immediately and started screaming and shouting and jumped. He was very, very scary,” Berhan Nemaneta said.
Both Nemaneta and his co-worker ran out of the store and locked the man inside until police could arrive.
The other clerk received some minor cuts to his head but is going to be OK.
Police have not identified the man and are working to figure out a motive behind the attack. The owner may release video of the attack later today.