New Delhi, Sep 7 - The swine flu scare in the national capital forced the closure of three public schools Monday after some of their students tested positive for the influenza A (H1N1) virus.

While the Vishwa Bharti Public School in Dwarka was closed for two days, the Heritage Grove Public School in Vasant Kunj and Banyan Tree School in Lodhi Colony were closed for a week.

'The school has been closed for two days for now and students will join from Wednesday. A student tested positive for the flu,' said a Vishwa Bharti Public School official.

'However, if the management decides to extend the holidays, it will be communicated to children and parents,' the official told IANS.

The Heritage Grove Public School was closed down for a week after a student was detected with the virus Monday. It was the school's first swine flu case, authorities said.

'The school has been closed till Sep 13. The students will return to the school on Sep 14. Parents and children have been informed about it both through a circular and SMSes,' said an official at the school.