Pakatan Rakyat comprising then of PKR, DAP and PAS was formed in 2008 and had managed to prevent a two-thirds majority for Barisan Nasional (BN) in parliament in additon to winning the states of Selangor, Penang, Kedah and Perak.
A look at the events surrounding the stabbing of a 16-year-old student, with ongoing investigations into the suspect's motives and the role of online violence
