Jeff Conaway will be taken off life support machines after doctors told the 'Grease' actor's family that he has had no brain activity since being admitted to a hospital May 11. "The feeding tube has already been removed. The ventilator which is breathing for Jeff, will be removed sometime this afternoon," a source close to the situation told RadarOnline.com.

The source said no measures will be made to revive the actor, saying, "Jeff is in no pain whatsoever."

It was originally reported that the 60-year-old Conaway was hospitalized in Los Angeles because of prescription drug overdose, but celebrity doctor Drew Pinsky later said the former 'Taxi' star was suffering from pneumonia and sepsis, a dangerous blood infection.