"The Special Investigation Team is conducting raids at all possible hideouts to arrest the workers," DCP Maheshwar Dayal said.
Meanwhile, MSWU secretary Yogesh Kumar, who was arrested yesterday, has been remanded in police custody till July 27.
Four other workers - Naveen, Surender Pal, Satbir and Pradeep - arrested with Kumar have been sent to two-day police custody.
Awanish Dev, General Manager-HR, died and 100 others were injured in arson and rioting by the workers in Maruti Suzuki's Manesar plant on July 18.
97 people have been apprehended so far in the case.