/> On Wednesday morning disaster struck at the location of Farah Khan's Tees Maar Khan when the leading lady Katrina Kaif collapsed just before shooting for a very important scene was supposed to start.

While Katrina remained unavailable for comment, reliable reports from the location at Malshej Ghat say the incident happened when Katrina was getting ready for the day.

"She had barely finished makeup and walked on to the location, said hi to her co-star Akshay Kumar and director Farah Khan when she collapsed in a heap...just like that!"

For the next three hours panic prevailed on location.

Says the source, "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 from Mumbai to Malshej. By then 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."

The reason given by the doctor for her sudden collapse was exertion and lack of sleep.

Katrina has been advised to take it easy.

Her spokesperson confirmed the incident. "Katrina was unwell on Wednesday morning. She has been advised some rest. Of late she has been going through tremendous work stress traveling in an out of Mumbai.

Yesterday she took time off from her schedule in Malshej to attend the FICCI Frames convention. It has been hectic time for her."