SAND SPRINGS, Oklahoma - Sand Springs Police are investigating two armed robberies they believe are related.  

Investigators say the first robbery happened March 16 at Dominos Pizza just west of Highway 97 on East 34th Street South.  Police say the suspect entered the store just before 11 p.m., pulled out a handgun and demanded cash.  They said after getting the money, he left in white SUV.  

The second robbery happened just after 9:30 p.m. Friday at the Super Save grocery store in the 4000 block of South Highway 97.  Police say the suspect entered the store, showed a clerk a handgun and demanded cash.  After getting the money, the suspect got into a white SUV and left.

Police released a surveillance photo of the robber inside the grocery store.

Investigators say the robber in both incidents wore a disguise and had a woman's voice.

If you know anything about either robbery call Sand Springs Police at 918-245-8777.