Two explosions occurred within span of minutes at about 1 PM in the court premises, Senior Superintendent of Police, Kanpur, Shalab Mather said.
The SSP said strings and materials used for making fire-crackers were recovered from the spot after police rushed to the court with sniffer dogs and forensic team on receiving information about the incident.
Mathur said it seems to be a work of mischief and it is suspected that since the elections to Lawyers' Association are just two days away someone may have used fire crackers to create panic.