A Samajwadi Party (SP) leader was booked in Uttar Pradesh's Shamli district for raising slogans in favour of Pakistan, police said on Monday.

Samajwadi Party leader Mehmood Alam, resident of Jhinjhana town, was arrested on the Meerut-Karnal highway when he was extorting money from the passers-by. Alam was drunk when he was arrested, police said.

He raised objections and resisted his arrest at the police action. When overpowered by six police constables, he started raising pro-Pakistan and anti-Narendra Modi slogans.

"The SP leader started shouting on top of his voice 'Pakistaan Zindabad' and 'Narendra Modi Murdabad' after which local officials booked him for breach of peace," an official said.

The top officials ordered stringent action against Alam and sedition charges were added to the initial 'challan' after they came to know about the incident.

Station House Officer (SHO) B.P. Yadav and the constables on duty were then asked to ensure that the case was "properly followed in courts as per the law", a police official told IANS.