Hundreds of party workers are also undertaking a relay fast along with Pacheni in front of district collectorate here.
The Youth Congress leader TH Shuhaib and Mattanoor party Block Secretary was hacked to death allegedly by CPI(M) workers at Mattanur in the district on Monday night.
Four assailants came in a car and hurled crude bombs and attacked the victim and two other party members with machetes.
Congress president Rahul Gandhi had expressed shock at the murder of the party's youth wing leader in Kerala's Kannur district and hoped the perpetrators of the "cowardly" act are brought to justice soon.
Pacheni is also demanding an end to the politics of violence and bringing those responsible for the murder of Shuhaib to book immediately.
The Congress has alleged that the CPI(M) has "unleashed red terror" in the state.
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