HUMBLE, Texas -

A woman was robbed at gunpoint in a Walmart parking lot.

Harris County sheriff's deputies said the woman was approached in the parking lot of the store on Wilson Road near Beltway 8 as she was loading her bags into her car about 10 p.m. Wednesday.

The woman turned around and found a man wearing a ski mask and armed with a silver pistol, investigators said. He demanded her purse, officials said.

Detectives said the woman gave the man her purse and the gunman ran to a waiting car. The driver was hunched down in the seat so he could not be seen.

The man gunman was wearing a mask, so investigators do not have a detailed description of him. Officials said he is Hispanic, about 5 feet 7 inches tall and 150 pounds.

Deputies said the video captured on the store's parking lot surveillance camera was not clear enough to be helpful in the case.

Anyone with information is asked to call Crime Stoppers at 713-222-TIPS.