Police in three towns are working together as they investigate three separate convenience store robberies Tuesday evening.

Manchester police released a security camera image of the suspect from the holdup at the Citgo on West Middle Turnpike at about 8:30.  The other robberies were at the Cumberland Farms on Talcottville Road in Vernon and the Quick Mart on Ellington Road in East Hartford.

Police say the suspect wore a two piece jump suit and a black ski mask and showed what appeared to be a handgun.