Sheriff: Man shot on Alabama school bus

(CNN) -- One man was shot on a school bus in Alabama on Tuesday, the Dale County Sheriff's Office.

Sheriff Wally Olson said in a written statement the suspect had not been taken into custody.

Michael Senn, a pastor, told CNN affiliate WSFA that he spoke to several students who had been on the bus.

He said a girl described the shooter getting aboard.

"He told most of them to get off the bus," Senn related. "And then he grabbed a little boy and shot the bus driver four times."

CNN affiliate WTVY reported the child is being held by the shooter.

Olson said a command post had been established at Private Road 1539 and U.S. Highway 231 near Midland City, Alabama, in the southeastern corner of the state.

WTVY reported that authorities said a hostage situation was ongoing.