The shuttle buses that replaced train service all day Wednesday have been phased out, the MBTA said in a social media post at about 10:30 a.m. Thursday.

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.

CAMBRIDGE - A derailed Green Line train in Cambridge has finally been moved, about a day-and-a-half after it derailed. That's the good news for Boston area commuters. The bad news is shuttle buses are still running for now. Seven people were hurt Tuesday evening when the train derailed after leaving Lechmere station around 5 p.m.