WARREN, Ohio -- A rash of 30 armed robberies on the west side of Warren has business owners worried and the police scratching their heads.

The group of bandits has entered several businesses wearing bandanas and carrying large guns. Surveillance video inside Movie Gallery and Dollar General on Parkman Road shows the men in the act, but so far police have not been able to identify them. This week, the robbers hit a bar and demanded the people inside to get on the floor and give them all of their money and jewelry.

"People are shook up, and we just don't understand for the amount of time that its been going on you'd think they would know who it is or be able to get them somehow," business owner Scott Graham said.

Graham has a heating and cooling business and a second hand furniture store on West Market Street. He installed surveillance cameras in his store two months ago, but now he has opted to close the furniture store until the armed robbers are caught.

"I'm taking it serious I've locked our doors so we don't have to worry about it. That being our secondary income we're able to close it, unlike probably a lot of businesses in the area," Graham said.

Warren Police are asking for the public's help to catch the bandits before someone gets hurt.

Anyone with information should call Warren Police.