The MBTA Police are asking for the public's help in identifying a man they said spit on a bus driver in Malden Wednesday evening.
They described the suspect as a white male, 40-55 years old, small build, wearing glasses, light blue jeans, a light colored shirt, black jacket, grey sneakers who carried a black suitcase with wheels.
Investigators said the assault, shortly after a similar incident in Charlestown Tuesday, is being taken seriously.
"The Transit Police Department will NOT tolerate assaults on MBTA employees, especially while in the performance of their duties," a statement read.
Anyone with information about the suspect's identity can call the Transit Police Criminal Investigations Unit at 617-222-1050 or the Intelligence Unit at 617-222-1170.
You can also leave an anonymous tip via the MBTA's SeeSay smartphone app, or simply text 873873.