The Velvet Underground rocker was taken by ambulance to Southampton Hospital early Sunday morning (June 30) for treatment, reports the New York Post. Meanwhile, Rolling Stone reports that Reed returned home Monday (July 1) afternoon. While Reed was admitted, a source at the hospital confirmed his admittance and told the Post, "everything's fine."

The incident came only ten days after appearing on stage at the Cannes Lions International Festival of Creativity in France, his first outing since the liver transplant.

Following the surgery last month, he wrote to fans via Facebook to assure them he was "stronger than ever." "I am a triumph of modern medicine, physics and chemistry," he wrote.