THIRUVANANTHAPURAM: A day after the CPM raised allegations against Congress leader Adoor Prakash citing his links with the accused in the murder of DYFI leaders at Venjarammoodu near here, the Attingal MP shot back on Wednesday. He demanded to know why DYFI state secretary A A Rahim was present at the police station at 2.45am when Shaheen — who was with the two slain DYFI activists at the time of the incident — was being questioned. Rahim maintained that his visit to the police station was a normal procedure following his colleague’s tragic death. Adoor Prakash also sought a CBI probe into the murder, saying only a Central agency could expose the motive behind the killings.