Justice P N Prakash rejected the bail plea after CB-CID DSP Ponnudurai opposed it saying Suresh would tamper with the witness.
One of the accused Maruthupandi had confessed that he had engaged people to murder PT worker Lakshmanan as per the instruction of Suresh, Ponnudurai submitted.
Police had recovered one revolver, six rounds of bullets and five swords from Suresh who was arrested on March 17 in connection with the murder. Nine cases had been registered against him and of these three were murder cases, Ponnudurai submitted.