In the UDF, the seat is allotted to the IUML. The name of national senior vice-president M P Abdussamad Samadani is doing the rounds but no official decision has been made yet.
The attack happened on Thursday night, while he was on his way from here to his home town in Kannur.
Protests were also raised over not giving a deserving position for Kummanam Rajasekharan, who returned to active politics after relinquishing his position as Mizoram Governor.
Joining BJP then came as a natural choice for the man from Kannur, especially since the saffron party has of late been wooing leaders from religious minorities in Kerala.
Abdullakutty achieved political prominence through the CPI-M student wing and when he defeated present Kerala Congress chief Mullapally Ramachandran twice in 1999 and 2004 from the Kannur Lok Sabha seat.
The opposition party took the extreme step after Abdullakutty stood firm on his stance even in an explanation given to it.