FREMONT -- For the second time in three weeks, a masked gunman has robbed a local Pizza Hut on a Sunday morning and made off with cash, police said.

Officers were called at 10:55 a.m. Sunday to the restaurant at 39010 Argonaut Way for a report of an armed robbery, said police spokeswoman Geneva Bosques.

Bosques said a male suspect approached an employee in the parking lot and robbed him at gunpoint, then used the employee to gain access into the business, which was closed at the time, police said.

Police described the suspect as a Hispanic or Middle Eastern man, about 5 feet, 9 inches with a medium build. He was last seen wearing a black hooded sweater, a gray baseball cap, a black bandanna covering his nose and mouth, light blue jeans and black sneakers with white soles.

About three weeks earlier, on March 31, a masked gunman robbed a Pizza Hut at 40655 Grimmer Blvd. and made off with cash and cell phones, police said.

During that robbery, employees said, a suspect confronted a driver at the rear door of the store and placed a black semi-automatic handgun against his head.

Three employees, including the driver, were then ordered into the men's bathroom, police said. The suspect then took their cell phones and an undisclosed amount of cash, then ran out of the store, Bosques said.

The suspect was last seen hopping a fence into a nearby residential backyard, Bosques said.

Police said they are investigating whether the robberies are connected.

Anyone with information about the incidents is asked to contact Fremont police at fremontpolice@fremont.gov or call the Investigative Unit at 510-790-6900. Anonymous tips can be left at www.fremontpolice.org/tip.

Contact Natalie Neysa Alund at 510-293-2469. Follow her at Twitter.com/nataliealund.