Around 150 workers and trade union leaders protesting at Chowel India Pvt Ltd, an automobile part manufacturing unit in Sriperumpudur, were arrested late on Sunday night.
The body of the deceased, Harish alias Sonu (31), was found in a drain on May 15, they said.
However, it snowballed into a controversy after it was found to be fake.
Oberoi, 40, who has acted in some television serials and appeared in commercials, was arrested earlier this month after the woman, who was in a relationship with him since 2016, lodged a complaint.
After release from the prison recently, he joined RC Reddy coaching centre as student to continue preparation for civil services.
Hilal Ahmad was arrested from Dooru area of south Kashmir's Anantnag district, a police officer said, adding that arms and ammunition were recovered from him.
SC to hear on Tuesday BJP activist's plea against arrest for sharing morphed photo of Mamata Banerjee
A vacation bench, comprising justices Indira Banerjee and Sanjiv Khanna, on Monday took note of the plea of advocate N K Kaul, representing the activist, that the issue be accorded urgent hearing.
One person was arrested on charge of assaulting and taking revenue officials hostage at Paikapada village under Binjharpur police station limits, police said on Sunday.
Anand Giri, 38, was arrested from the western suburb of Oxley Park in Sydney early on Sunday and was subsequently charged with two counts of committing an act of indecency on two women.
A 21-year-old BBM student was found dead in his PG in Mattikere near Yeswanthpur on Monday.
The development comes close on heels of Pakistan's "goodwill gesture" of releasing 100 Indian fishermen, mostly from Gujarat, just last month.
The 12 people were found in the residence of a woman who claimed that her cousin who lives at Tahan in Myanmar had asked her favour to keep the 'guests' before being taken to the neighbouring country.
Siddiqui Ahamad Danish, who is based in New Delhi, was arrested on Thursday when he allegedly attempted to forcibly enter a school in Negombo city to speak to its authorities.
Danish had attempted to enter the school to obtain information regarding a student killed in the bombing of St Sebastian's Church when parents who were at the school at the time alerted the police.
A 32-year-old man was allegedly caught in CCTV camera throwing the kittens into fire one by one and the kittens escaping.