Delhi Police has arrested four “radicalised” men from Maharashtra, Odisha, and Bihar who allegedly planned terror activities, carried out recce of sensitive locations to target them and attempted to recruit others through encrypted online platforms, officials said on Saturday.

An Improvised Explosive Device (IED) and related material were seized during the operation, police said. Two of the accused were in the process of assembling a remote-controlled toy car fitted with an IED to target crowded places, they alleged.