A day after two key suspects in the Kolkata rape-murder case were granted bail, the Left parties and the Congress took to the streets in the West Bengal capital on Saturday, holding protest rallies and accusing the Central Bureau of Investigation (CBI) of having "failed" to deliver justice in the case. 

The parties also alleged that there was a "tacit understanding" between the ruling Trinamool Congress (TMC) in West Bengal and the Bharatiya Janata Party (BJP)-led Centre, news agency PTI reported.