At least 10 Left party offices were vandalised and police resorted to baton charge as violence broke out in Kerala’s Kannur district on Wednesday night over the death of an IUML youth wing member. Widespread violence was witnessed during the funeral procession of the 22-year-old Youth League member, Mansur, who died in a post-poll clash allegedly between workers of the CPI(M) and the IUML on Tuesday.