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Nearly 15 years after a Lancaster man was killed in his check cashing business, surveillance images are among the few clues.

As part of WGAL's "Unsolved" series, find out why police think a guilty conscience may be the key to solving the case and hear the plea from a family friend of the victim.

It was December 2007 when two men wearing hoodies entered J&R Check Cashing in the 300 block of East King Street.      

Owner Juan Lopez was helping a customer when police said the men, armed with handguns and wearing facemasks, were yelling in Spanish and forcing the customer to the floor.

Officers said the men robbed the business, grabbing $93,000 before shooting Lopez.

"The family, the people that know the victim, or knew the victim, they all want answers, and the difficulty for us is that we're not able to give those answers to them until we solve this case," Capt. Michael Winters said.

In the last decade and a half, some things haven't changed. The store is still a cash-checking shop, and family, friends and investigators are still determined to find Lopez's killers.

Family friend Isabell Irizarry said the mission for police is clear: "Go back again and try again," she said.

"I certainly understand the frustration," Winters said.

Police hope a guilty conscience may be the key.

"We hope that over time, people's consciences will wear on them, that if they knew information from before or if they learned information – in the last 15 years, say – that they would be willing to come forward," Winters said.

Investigators have surveillance video, and they released still photos.

"The video technology that we have available today is so different," Winters said.

Fifteen years makes a big difference in technology.

"We can't improve the quality. What we have is what we have," Winters said.

Irizarry said the killers probably think they got away with the murder by now.

"I feel sad because they're killing innocent people," Irizarry said.

Lopez had volunteered at Spanish radio station WLCH and served as a church leader.

"I'll tell you he was a beautiful person," Irizarry said.

"We don't want them to think that we've given up," Winters said.

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