The Congress party called for a dawn-to-dusk shut down in protest of the murder in the district, but allowed vehicles to ply.
According to the party, Shoaib along with a few others was waiting in front of a night eatery near Mattanoor, near here, on Monday, when four persons came in a car and threw bombs to create a scare.
They then slashed him with a sword. The incident occurred around 10.45 p.m.
"Not long back, a club of the Congress party came under heavy attack, after the CPI-M leadership was upset when the children of the party leaders took part in a meeting.
"They unleashed an attack and Shoaib, was at the forefront to stop this. Since then the CPI-M had announced publicly that his days are numbered," said Kannur district Congress party chief Sateeshan Pacheni.
Pacheni said there has been an uneasy calm in and around Edayanoor near Mattanoor for a while.
Jayarajan said that he has been told by the Mattanoor CPI-M leaders that they have no role in Shoaib's killing.
"We will look into what has happened and if any of our party members are involved, then appropriate action will be taken.
"But what we are told is that our party has no role in it," said Jayarajan.
This was the 21st political murder that has taken place in Kannur after Pinarayi Vijayan assumed office in 2016.
While the Mattanoor CPI-M leaders have flatly denied any role of the party behind the murder, TV channels have now released a video of a march taken out by the CPI-M, who are seen shouting slogans that Shoaib's days are numbered.
"The police in Kannur is a mute spectator, as the CPI-M is in control of everything. They are striking at will to eliminate their political rivals in the most inhumane manner.
State BJP general secretary M. T. Ramesh said that it has now become a common practise that when a political murder happens in Kannur, the CPI-M is the common factor and the victim is either the BJP/RSS or the Congress.
The police have started a probe.
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