Arrested Tamil Nadu Minister V Senthil Balaji on Wednesday underwent a bypass surgery and was hemodynamically stable, the private hospital treating him here said.

The minister, arrested by the Enforcement Directorate (ED) in a cash-for-jobs scam last week, underwent a beating heart coronary artery bypass surgery in the morning, a medical bulletin issued by Kauvery Hospital said. "He is currently hemodynamically stable and being monitored," it said.