Both occurred in Bridgeport.
The first robbery took place around 8:24 p.m., Tuesday at a pizza parlor in the 2100 block of Boston Avenue, in Bridgeport, said Scott Appleby, director of Emergency Management.
"The suspects reportedly displayed a knife and a firearm," Appleby said.
The suspects fled in an unknown direction, he added.
Shortly after in the 500th block of Success Avenue another pizza parlor was also robbed by suspects matching a similar description, Appleby said.
Anyone with information is asked to contact the Bridgeport Police TIPS Line at 203-576-TIPS.
Calls are kept anonymous.
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