Armed with banners and placards, a group of students from schools and colleges staged a protest outside Amitabh Bachchan's residence over his tweet supporting the Mumbai Metro project. As many as 22 students were detained when they squatted on a road near Bachchan's bungalow in suburban Juhu and engaged in slogan shouting, police said.

Amitabh Bachchan, who has been the face of several environmental campaigns, is facing flak for coming out in support of the Metro project. Activists have opposed the proposed felling of trees in Aarey Colony, to make way for a Metro car shed.