A northwest Houston food store owner shot and killed a man he said was trying to rob him, but police did not find a gun on the man, investigators said Friday.

Houston police said the 49-year-old owner of the New Land Food Store, 822 West Little York, called 911 at 9:30 p.m. Thursday and said a man was trespassing.

Investigators said Terrance Hall, 33, was agitated when he entered the store and tried to get into a back room. When he couldn't, he climbed onto an ATM machine, over plexiglass and fell behind the counter, police said.

During a confrontation, the store owner, Thom Vu, grabbed a gun and fired several shots, investigators said.

"(Hall) sustained multiple gunshot wounds and was transported to a nearby hospital, where he was pronounced deceased," said Brian Evans with HPD Homicide.

Police said they did not find a weapon on Hall.

Police said the store owner and Hall knew each other because Hall was a longtime customer of the store.

Hall's family said they have doubts about the store owner's story.

"My brother never carried a weapon," Hall's sister, Tamika, said.

Hall's relatives said he had a troubled past and a criminal history, but they know he had no intention of harming Vu.

"My son was a good person, a good-hearted person. The only person he ever hurted was hisself," Hall's mother said.

No charges were filed. The case will be referred to a Harris County grand jury.