The new rate came into force on February 24 and will remain effective till June 15 this year, the official said.
"The decision was taken to prevent over-crowding at these stations during the summer travel rush," he said.
Since the second week of February, there has been a surge in daily COVID-19 cases in Mumbai.
The city has so far reported over 3.25 lakh COVID-19 cases and more than 11,400 deaths due to the disease.
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