Police said the authorities of Ideal Kindergarten School informed them about the abandoned bomb near the school boundary wall at about 9:30am. Sub-inspector (SI) Mir Kashem immediately rushed to the spot, brought the bomb to police station and defused it at 11:30am.

"The bomb was manufactured with gel-explosives and electric cable. It was wrapped in red tape and also contained two pencil batteries and a switch,'' the SI told the journalists.

The Officer-in-charge (OC) of Kotwali Police Station Moin Uddin, however, disagreed with the SI's observation and said that it was not a bomb but a bomb-like substance recovered in a defused condition.

School authorities postponed academic activities immediately after the incident.

A general diary was also lodged.