Michael Lohan has been rushed back to hospital, just hours after being released.

The showbiz patriarch - who is the father of troubled actress Lindsay Lohan - was taken into hospital after complaining of chest pains last month, and underwent heart surgery in the hope of unclogging an important artery on Monday. While the 51-year-old star was released from hospital in Fort Myers, Florida, this morning after the surgery was deemed a success, he was rushed almost straight back to the emergency room with a bacterial infection.

"When Michael went back to the rehab center he was running a really high fever, so he went directly back to the hospital. He's in the emergency room now," his friend Tom Murro told RadarOnline.com.

Once the former Wall Street trader's condition is stable, it is thought he will return to his court-ordered treatment facility, where he is currently participating in an anger-management intervention scheme after pleading no contest to four domestic violence charges against former fiancee Kate Major.