Four police officers accused in the Sampath custody death case were arrested by a Central Bureau of Investigation (CBI) team on Thursday.

Three police officer were arrested from Palakkad. They were T.N. Unnikrishnan, sub-inspector of the Palakkad South station; P.V. Ramesh, sub-inspector of the Town North station; and constable Shyama Prasad. Deputy Superintendent of Police C.K. Ramachandran was arrested from Deshamangalam in Thrissur.

Fourteen policemen are accused in the case, according to the Crime Branch, which investigated the case. All of them have been suspended from service.

Sampath was the first accused in the sensational Puthur Sheela murder case. Sheela, wife of V. Jayakrishnan, a leading businessman here, was murdered at her house at Puthur in the town on March 23, 2010 allegedly by three persons by stabbing her in the presence of her mother, Karthiyayani Amma, who was also seriously injured in the attack. Samath, who was arrested by the police along with the other two within a week of the murder, was found dead in police custody.

The probe has been handed over to the CBI on a directive of the Kerala High Court.