Central Railway will operate a mega block on its suburban network on Sunday to carry out engineering and maintenance work, affecting services on the Thane-Kalyan, Panvel-Vashi Harbour and Trans-Harbour sections, Central Railway said in its Mumbai local train updates.

The block on the fifth and sixth lines between Thane and Kalyan will be in force from 9 am to 1 pm. On the Harbour and Trans-Harbour lines, services between Panvel and Vashi will be affected from 11.05 am to 4.05 pm, excluding the Port line.