New Delhi, Sep 10 - Five girl students were killed and at least 34 injured in a Thursday morning stampede in a school here following rumours that electric current had leaked into the water in the flooded building after heavy overnight rain, police said.

The incident took place in the Government Senior Secondary School (Class 6-12) in Khajoori Khas in northeast Delhi at around 9 in the morning. The victims were mostly from classes 7, 8, 9 and 10, who had come to the school in pouring rain for their half-yearly examinations.

'Five girls have died and 34 other children have been injured. The injured are undergoing treatment at Guru Tegh Bahadur (GTB) Hospital,' said Joint Commissioner of Police Dharmendra Kumar told IANS.

Initial reports suggested that the stampede took place as electric current had leaked into the water that had flooded the school following heavy overnight rain. But later several victims and witnessed told police that some boys were teasing the girls, which led to the stampede.

'These reports are not confirmed. We are investigating and trying to find out the exact reason behind the stampede,' a senior police official said.

Hospital authorities said at least five of the injured students are in a 'serious condition' and clarified that there were no electrocution injuries.

'There has been no electrocution injury. Some students have suffered injuries to head and some to stomach,' a doctor at GTB hospital said.

Reshma, a student of class VII and a victim, told IANS: 'We were on the staircase when boys blocked our way both from front and back. The boys started pushing us and then all of us fell on each other on the stairs. Our teachers rescues us after removing boys from over us,'

'Several of my friends suffered injuries in the incident,' she added.

Delhi Chief Minister Sheila Dikshit, however, denied these reports and said: 'These are just rumours. The incident took place when some girls were going up the stairs and others were coming down.'

Dikshit visited the hospital along with Health Minister Kiran Walia and Education Minister Arvinder Singh Lovely. She met the injured girls.

Dikshit directed the hospital authorities to take extra care of injured girls and provide better medical facilities to them.