CHICAGO (CBS) — An Indianapolis police officer mistakenly shot an armed homeowner, while responding to a robbery call early Tuesday morning.

Indianapolis Police Assistant Chief Randall Taylor said a woman called police around 4:30 a.m., saying she had been robbed on her driveway.

“Female victim apparently was returning home from work; at one point, the victim was threatened with a weapon. A gun was pointed towards her head,” he said.

The woman gave up her keys, and then went into her house and called 911. Her husband went outside with a gun.

“The husband was out with the weapon, and unfortunately the husband was shot by one of our officers,” Taylor said.

Police said the man was in serious but stable condition at the hospital, and was expected to survive. The suspect left the victims’ car in the driveway and fled the scene.