A crude bomb explosion reportedly at a rally of the National Citizen Party (NCP) at the end of its “July March” has left at least three people injured.

Witnesses said the explosion took place around 9:45pm on Monday at the Eidgah ground near Savar Police Station.

NCP Convenor Nahid Islam and Member Secretary Akhter Hossen were on the stage at that time.

The injured are Shahin Khandaker, Jasim Uddin, and Mohammad Shahadat Hossain, said NCP central committee member Yasir Arafat.

Shahin has been hospitalised with serious injuries, he added.