Thrissur: The police team probing the Chandrabose murder case submitted a chargesheet against businessman Muhammad Nisham at the First Class Magistrate Court here on Saturday.
According to the chargesheet, Chandrabose was killed by Nisham owing to his prior enmity.
The chargesheet said that Nisham had earlier threatened Chandrabose that he would kill him for stopping vehicles that came to the flat late in the night.
The chargesheet contained scientific evidences and other documents to prove the charges, including murder, against Nisham, police said.
Statements of 12 eyewitnesses, including Nisham's wife Amal, had been been recorded under Section 164 of the Code of Criminal Procedure. Besides, statements of over 100 witnesses had also been recorded and attached with the chargesheet.
Police said they also have plans to move court for a speedy trial.
The businessman, who was in an inebriated state, had allegedly in a fit of rage assaulted Chandrabose and later rammed his luxury vehicle into him over delay in opening the gate of his residential complex here on January 29.
The guard succumbed to injuries on February 16.
The case had evoked widespread protests across the state.