Zsa Zsa Gabor has returned to the hospital after suffering a setback in her recuperation from hip replacement surgery, her publicist has announced. John Blanchette says he does not know the nature of the complications.

Gabor returned home Wednesday night after spending four weeks at UCLA Ronald Reagan Medical Center. The 93-year-old actress was swarmed by photographers as medics ferried her from the ambulance into her Bel Air home.

Gabor had been hospitalized at UCLA Ronald Reagan Medical Center since she broke her hip July 17. The actress's condition began to deteriorate after hip-replacement surgery days later, and she remained hospitalized for the following three weeks. On Tuesday, Gabor's publicist announced the actress had an infection.