West Bengal Chief Minister Mamata Banerjee on Thursday afternoon left Kolkata for a four-day trip to New Delhi, where she was likely to meet senior opposition leaders, besides attending a Niti Aayog programme, scheduled to be held on August 7, official sources said.

The TMC supremo will also be meeting party MPs at Rajya Sabha member Sukhendu Sekhar Roy's residence in the national capital, shortly after reaching there in the evening, they said.