THRISSUR: It is suspected that more people were involved in the incident where a youth murdered his brother following a drunken brawl. Police are investigating whether the accused Sabu sought the help of anyone to bury the body. The investigating officers will check his phone call records.

Sabu, who is on remand, will be taken into custody and questioned again. Police will file a custody application in court today.

Investigating officers have decided to arrest the brothers' mother, the second accused in the case, only after questioning Sabu. Sabu had testified that his mother had helped him to bury the body.

Sabu murdered his brother Babu on March 16. He told the police that he had strangled his brother to death. However, there were some injury marks on Babu's body. The investigating officers will examine how this happened.