Actress Aishwarya Rai, who was injured near Nasik, is undergoing detailed medical investigations at the Hinduja Hospital in Mumbai, hospital sources said on Thursday.

"The duration of her stay in the hospital will be decided by the doctors after investigations are over," they said.

Rai, who was injured during the shooting of film Khaki when a jeep accidentally hit her near Trimbakeshwar, about 25km from Nasik, was admitted to the hospital on Wednesday night for a minor fracture in her left foot, the sources said.