Israeli police have arrested two of Madonna's bodyguards after an alleged brawl with photographers outside the singer's hotel.
Madonna wears the red Kabbalah bracelet
Madonna and her family are on a spiritual pilgrimage to mark the Jewish New Year.
Two of the photographers, and a policeman who tried to break up the fight in Tel Aviv, were injured.
Israeli police spokeswoman Liat Pearl said two security guards had been detained for questioning.
Madonna has been in Israel since Wednesday, along with 2,000 other students of Kabbalah - a type of Jewish mysticism.
Her visit has sparked a media frenzy with the local newspapers devoting pages detailing her stay.
The scuffle allegedly broke out on Friday evening as the photographers trailed Madonna from a restaurant to her hotel.
A cameraman for the Associated Press, who was at the scene, claimed that as photographers followed her convoy back to the hotel, some of the bodyguards stopped and tried to push another photographer off his motorbike.
He also alleged that one photographer was knocked to the floor before a second, who had tried to intervene, was also attacked.
The two bodyguards were taken away by police for questioning.
Madonna had already entered her hotel when the fight broke out.
Madonna's interest in Kabbalah became public when she was spotted wearing its traditional red string bracelet.
Since then, a string of high-profile celebrities including Britney Spears and Courtney Love have been seen sporting the bracelet.
Designer Donna Karan and Marla Maples, an ex-wife of Donald Trump, were among those travelling with Madonna, according to the Los Angeles-based Kabbalah Center, sponsor of the trip.