Weslaco police have a suspect in custody, but are still looking for another man who held up a Dollar General at knifepoint.
Investigators say one of the suspects walked into the store on the 900 block of North International around 9:30pm Sunday night, while the other waited at the entrance.
Police said the man inside, took out the knife and walked up to the female clerk demanding money.
The clerk, who was helping customers at the time, paused for a bit but complied handing over the cash inside the register.
The men took off heading east on Pike. Both of them had white cloths over their faces.
No one was injured during the robbery.
Police took one of the suspect's into custody on Monday afternoon.
His name has not been released. He is expected to be arraigned in court on Tuesday.
Anyone with information on this crime is encouraged to call Weslaco Crime Stoppers at (956) 968-8477.
If you information leads to an arrest you could be eligible for a cash reward.
Callers can remain anonymous.