Green Line service resumed Thursday between North Station and Medford/Tufts following the closure after a derailment Tuesday. “We sincerely apologize for this incident and thank the public for their patience while we worked to resume service,

MBTA alerts riders that shuttle buses will replace service from North Station to Medford/Tufts until regular service resumes.

Regular service has resumed on the MBTA’s Green Line following a derailment in Cambridge earlier this week that prompted a National Transportation Safety Board investigation, officials announced Thursday.