Rashtriya Janata Dal (RJD) president Lalu Prasad Yadav on Tuesday evening visited the Asian Heart Institute here for a routine check-up, sources said.
His son and Bihar Deputy Chief Minister Tejashwi Yadav was with him as the veteran leader arrived at the hospital.
Yadav had undergone a cardiac surgery at the same private hospital in 2014.
Lalu Prasad Yadav and his son are in Mumbai to attend the Opposition I.N.D.I.A alliance's meeting of August 31 and September 1 in the city.