WFPD hasn't made an arrest in either case, and they said part of the problem is there's no surveillance video of the crimes.
That's why WFPD urged local store owners to spend a little now, so they can save later.
Like at Local Boys Liquor, where if you walk into the store, smile, because you're on camera.
"I put a surveillance system in shortly after I bought the store," said Owner Ken Simpson, "there was one here, and I just upgraded to a more modern surveillance system."
WFPD encouraged more store owners to follow Simpson's lead as a way to help prevent crime.
"They let the customer know that you as a business owner, you take pride in your business and you're concerned about their safety as well as the employees," said Officer Timothy Johnson with WFPD.
Law enforcement experts said while it may be nearly impossible to prevent every robbery, if a store has good surveillance police will have a better chance of catching crooks.
In the recent robbery and murder at Mo's Grocery on Old Iowa Park Road, Johnson said without surveillance video the suspects could have gotten away.
"[Cameras] provide good video of the suspects, and the detectives use that when they investigate the crime," explained Johnson.
At Local Boys Liquor, not only does having a number of cameras help detour robbers from coming into the store, but it also helps detour shoplifters as well by eliminating blind spots.
Simpson said before he installed his system, shop-lifters were costing him big bucks.
After the upgrades, he said shoplifting isn't really a problem anymore.
Officer Johnson said it's a perfect example of how a business owner should re-invest in his store.
"If a business gets to a point where you have problems with shoplifting, robberies and violent crimes," said Johnson,"people may not want to come to your business and they'll take their money elsewhere."
If you're thinking about putting in a surveillance system but think you can't afford it, Officer Johnson said you can pick up a decent digital system for around $500.
Two North Korean ministries orchestrated the plot to kill Kim Jong…
Patrol officers at the Bowie Police Department are now equipped with…
Joeseph Wapner, best known as the original judge on "The…