Nairobi, Sep 23 (IANS) At least seven children were killed on Monday after a classroom collapsed at a school in the Kenyan capital of Nairobi, officials said.

The wooden structure at Precious Talent Top School collapsed just minutes after the start of the school day on Monday, the BBC reported.

Dozens of students were reported to be trapped.

The school's director, Moses Ndirangu, has blamed the collapse on the construction of a nearby sewer pipe, which, he said might have weakened the foundations of the building.

The Kenya Red Cross has transferred some children to the Kenyatta National Hospital in Nairobi.

Images on social media show hundreds of residents gathered around the site as rescuers search through the rubble.

--IANS ksk