Owing to a break down of mail express engine, the train between Ambarnath and Badlapur was stalled for nearly 45 minutes, from 7.05 am to 7.50 am.
The news comes students from class 10 and 12 have to appear for their board exams.
"Train 22108 Latur to CSMT has stopped between Badlapur - Ambernath section due to trouble in engine. Time 7.05am onwards. Trains running from Karjat/Badlapur/Ambernath towards Kalyan/CSMT side are likely to be affected. All efforts are being taken to solve the problem," the CR said in a statement.
The train's operations were re-started by 7.50am and is plying as normal.