Police are identifying an armed robber fatally shot in a firefight with police after jumping onto a bus to flee.

Baltimore County police identified the man Thursday as 35-year-old Blaine Erb of no fixed address, saying he had a lengthy criminal history. Police say an officer remains in serious condition and a wounded 21-year-old Baltimore woman is expected to survive.

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Erb jumped on the bus as he fled an armed robbery at a Dundalk shopping center Wednesday. When Erb fired at officers, police say they returned fire. Erb died at the scene and police say they found two handguns and ammunition by his body.

Police say four officers who fired are on administrative leave. Police didn't release the races of Erb or the officers; court records indicate Erb was white.