Overview

• The robbery unfolded just after 11:20 a.m. Wednesday when Shawn Twomey entered the Chelsea Groton Saving Bank and implied he had a weapon to seize an undisclosed sum.
• Witnesses reported Twomey fled on a blue Suzuki GSX-R1000 motorcycle before crashing into the rear of a tractor-trailer roughly 13 minutes later on Interstate 95.
• Emergency personnel pronounced Twomey, a New Haven resident, dead at the scene, leading to an hours-long shutdown of the key travel artery and widespread detours.
• Stonington Police confirmed the connection between the bank robbery and the fatal crash on Thursday as they enlisted FBI assistance to bolster the inquiry.
• Investigators are asking anyone with information about the incident to contact Stonington or Connecticut State Police as the joint probe remains active.