HOUSTON -

 Police are trying to figure out what was taken from an overnight burglary in north Houston.

Investigators said they got a call around 4:15 a.m. Wednesday from the Harbor Freight Tools store on the North Freeway and West Dyna. When officers arrived, they searched the inside and didn't find anyone.

Police did find a busted lock on the front door and a brand new dolly sitting out front.

Investigators believe it was used by the thieves to move items from inside the business.

They said the store is so large and has so many items, it's hard to tell if anything was taken.

Police are hoping to review surveillance video to get a better idea.