SHENANDOAH, Texas -- Diners were shocked to hear about a deadly shooting inside a popular Woodlands-area restaurant.

An off-duty Montgomery County Sheriff’s deputy shot and killed a robbery suspect who entered the Raising Cane's restaurant on Research Forest DriveTuesday night.

Employee Bralin Henderson told us the armed man entered through a side door, went for the register, grabbed a manager, then encountered the deputy who repeatedly ordered him to drop his weapon.

“Said, 'I’m serious, drop your weapon!'” Henderson said. “And my coworker, Andrea, said 'We’re getting robbed.'"

He said the suspect refused to comply.

His exact words were 'No, I’m not going to hurt her,'” said Henderson.

He then heard at least five shots. It is unclear how many times the suspect was hit.

“Like everybody else was crying, scared, startled,” said Henderson.

Two other people inside the restaurant suffered minor injuries. One of them was possibly grazed by a bullet.

“It’s shocking, to be honest,” said customer Ken Parks. He planned to eat lunch at the location Wednesday afternoon and had not yet heard what happened.

Parks said he hates someone lost their life, but believes the deputy did what he needed to do.

“If you don’t do the robbery, you don’t get shot.. I mean, it’s pretty simple,” said Parks.

Multiple agencies are involved in this investigation, including the Texas Rangers.

Someone with Raising Cane’s told us off-duty deputies are hired here every year during the holidays.

<p>Officials are investigating an officer-involved shooting and attempted robbery in Montgomery County.</p>