Katrina Kaif and her series of health problems have raised serious concern. The actress who have been advised bed rest twice in last couple of months fainted again on the sets of Farah Khan's 'Tees Maar Khan'.

The incident took place on Wednesday, at Malshej Ghat, where Katrina was getting ready for the schedule.

Talking to a news daily, a close source from the sets revealed, "She (Katrina) had barely finished makeup and walked on to the location, greeted her co-star Akshay Kumar and director Farah Khan when she collapsed...just like that!"

"No one knew quite what to do since the medical facilities in Malshej were hardly adequate. Akshay quickly called up Mumbai and a doctor was rushed to Malshej. By the time he arrived, Katrina was feeling better, though weak. Farah suggested they cancel her shooting for the day, but Katrina insisted on shooting in the second-half of the day's schedule," added the source.

Katrina has confirmed the news and is quoted as saying, "It's okay, I just collapsed... It's nothing serious... just low blood pressure because of the heat." Earlier, she was admitted to the hospital because of stomach infection.