Mumbai: Millions of commuters were stranded on the Central Railway (CR) stations after a midnight fire in a signal cabin.

It will take three to four days to fully restore the traffic, a CR spokesperson said adding that services on the Harbour line were also hampered.

Only 70 percent of the normal suburban services would be operated on Wednesday, he said, adding that 4 long distance trains coming from Pune and Manmad have been cancelled.

"There was a fire in the signal cabin between Kurla and Vidyavihar stations at midnight and there was heavy damage to signalling gears," the spokesperson said.

The fire was brought under control within half an hour by fire brigade personnel.

The fire was brought under control a few hours later and there were no casualties. Consequently, suburban and long distance trains were hit severely since early morning. At least four incoming and outgoing outstation trains were cancelled, the official said.

Trains services resumed partially at 3.30 am on Wednesday, but the trains were running over half an hour late. Railways have allowed CR suburban commuters to use their season pass on the Mahim-Churchgate route on Western line, he said.

Similarly, CR suburban commuters can board long distance trains at Kalyan and Kasara till CST using their pass, he added.

Around 38 lakh people commute on the Central Railway suburban network daily.