They're the crimes that frustrate police: cases where officers do everything they can, but the suspects are never caught. Here in the Tri-Cities, it happens more often than most people would like to admit.
"There's a lot of people that don't normally come, so you look at them closely sometimes," says convenience store owner, Angel Garcia.
Garcia can't afford not to. A few months before becoming the owner of the A&A Mini Mart on Court Street, crooks barged into the store and demanded cash. They pistol-whipped the store's owner before escaping. The owner was beaten so badly, he spent two months in the hospital, and eventually had to sell his business to Garcia.
"I don't want them to do it to somebody else, so I would like them to get caught."
Police still don't know who these robbers are. Since he bought the store, Garcia installed several more security cameras to stay safe.
"We put in eight more along with security around the door," he tells Action News reporter Ryan Simms.
Elsewhere in the Tri-Cities, Kennewick police are still looking for the men who held up the Touchstone Jewelry store in February 2011. Police think they also may be responsible for several robberies in the Portland area. A $1,000 reward is being offered in this case, but police have no leads.
Meantime, Pasco police still don't have any information on a three year old robbery at the Metro Mart on Court Street. In November 2009, a man walked into the store, flashed a gun, and got away with hundreds of dollars.
As the years go by, Police tell KEPR it gets tougher to solve crimes. They say it often takes just one tip to solve a case and give victims closure.