The by-election to Malappuram, a stronghold of the Indian Union Muslim League, was necessitated following the resignation of party general secretary P K Kunhalikutty from the Lok Sabha to contest in the Assembly polls.
Prakash, who is also the Malappuram District Congress Committee president, breathed his last at 5 am.
The ban which comes into effect at 9 pm on Tuesday prohibits the assembly of four or more people. It will remain in force until April 30.
If immediate corrective steps are not taken, it will result in his untimely death, she said in a letter.
The curbs on public activities and gatherings will continue until April 30 or another order is issued.
The FIR and a list of the accused were submitted to the CBI court in a sealed envelope.
Based on the information given by the accused, the body was found at the plot that was 350 metres from Subeera's house.
An FIR has been filed against Jaisal and another person at Tanur police station in an alleged moral policing incident on April 15.
After the images of the dog being dragged along the road went viral on social media, Xavier had gone into hiding. He was arrested on Sunday and later, let off on bail.
Kerala Minister for Higher Education and Minority Welfare K T Jaleel had to step down after the Lok Ayukta held him guilty of nepotism.