PHOENIX - Phoenix Police and Silent Witness are offering a reward of up to $1,000 to find two men who threatened to kill a convenience store clerk, as well as a man who robbed a woman at gunpoint at an ATM and the two people caught on camera using her stolen credit cards.

The first robbery happened at the Chevron station on 19th Avenue and Baseline on October 2, 2017. The two men, who had on hoodies, walked into the store, then up to the counter.

“It's 3:30 in the morning and these guys get into the convenience store and they threaten to kill the clerk,” said Sgt. Jamie Rothschild, who’s with Silent Witness.

Surveillance video shows the men stealing cash and cigarettes. Police say they took off, ran by a mobile home park, then got into a car and drove away.

In the other case, a man and woman were caught on camera using stolen credit cards at a Valley Walgreens, just after another man stole them from a woman at gunpoint. That happened at the ATM on 107th Avenue and Indian School on September 21, 2017.

“If you lose your property or it's taken from you, the quicker you can notify the bank or financial institution the better,” Sgt. Rothschild said. “Not only does that stop them from being used as quickly and minimizes your losses, but it helps law enforcement with a record.”

And that could help police find the robbers.

If you recognize any of the robbers, you’re asked to call Silent Witness at 480-WITNESS. You can remain anonymous and receive a reward of up to $1,000.