AKRON, Ohio -- Akron police responded to two robberies of pizza delivery drivers within a span of an hour late Sunday and early Monday, marking the third and fourth such robberies in the city in less than a week.

About 11:40 p.m. on Sunday, a 55-year-old Domino’s driver said he had just delivered an order on the 300 block Power Street near the University of Akron when he was approached by two men, one armed with a gun, according to a police report.

The suspects asked for change for a $10 bill and the victim said he didn’t have change and began to walk back to his vehicle, police said. One of the suspects grabbed the delivery driver from behind and demanded he empty his pockets, while the other suspect held him at gunpoint. The robbers ran from the scene with an unknown amount of money, police said.

About an hour later, officers responded just after 12:30 a.m. Monday to another robbery involving a pizza delivery driver on the 800 block of Huber Street in East Akron, according to a police report.

The 37-year-old Domino’s driver said three people wearing dark clothing approached him and robbed him at gunpoint, escaping with an unknown amount of cash, police said.

No arrests have been made in either case.

Last Monday, four boys robbed and pistol-whipped a 21-year-old Papa John’s delivery driver in Akron’s Wallhaven neighborhood, according to a police report.

On Thursday evening, two people robbed a 71-year-old Papa John’s driver after he delivered a pizza in South Akron, police said. One of the suspects brandished a gun, but the victim was not hurt.

Anyone with information about any of the robberies is asked to call Akron police detectives at 330-375-2490, Summit County Crimestoppers at 330-434-2677 or text TIPSCO with your tips to 274637. Callers can remain anonymous.

To comment on this story, visit Monday’s crime and courts comment section.

Want more Akron news? Sign up for cleveland.com’s Rubber City Daily, an email newsletter delivered at 5:30 a.m. Monday through Friday.