"This is unacceptable. We demand immediate action against Alam and the others who were involved in today's rally. There can be no leniency on this, this is clearly a major aberration and we expect PDP to take action.
"If corrective action is not taken... If PDP does not conform to expected notes (sic) of BJP and the Centre, consequences would follow," said BJP spokesperson GVL Narasimha Rao.
"What happened today is a complete reversal of that. This is unacceptable. We clearly expect some kind of action," he said.
After a gap of five years, J-Kashmir government allowed hardline separatist leader Syed Ali Shah Geelani to hold a public rally today on the outskirts of Srinagar where his supporters, including Alam, raised pro-Pakistan slogans while others waved Pakistani flags.
Alam was released from jail last month with the move having triggered a controversy.