Preity Zinta, who has worked with Salman in a couple of movies, was spotted at the Jodhpur airport earlier in the day on Friday.
According to a Times Now report, Khan's lawyer, Mahesh Bora, claimed to have received threat calls last night.
Amid tight security, Salman was taken to the Jodhpur Central Jail where he will spend at least a night in barrack number two. While he eventually got acquitted from nearly all of them, the actor however served a six day imprisonment in Jodhpur before this happened. The 52-year-old actor was declared guilty by a judge for hunting the rare antelopes in forests near Jodhpur while filming "Hum Saath Saath Hain" in 1998.More news: Sinclair Broadcasting Orders Local Anchors To Record Bizarre 'Hostage' Video
The case had been in trial for the past 19 years and Salman could have faced six years in prison under Section 51 of the Wildlife (Protection) Act.
Slated for Eid release this year, "Race 3" is co-produced by Salman and Tips Industries Ltd, and stars Jacqueline Fernandez, Saqib Saleem, Bobby Deol, Daisy Shah and Anil Kapoor.
Khan, 52, has starred in more than 90 Hindi-language films, but has also had a reputation as a Bollywood bad boy, known for his run-ins with the law - including a fatal auto accident - and his troubled relationships with women.
His family members, including sisters Arpita and Alvira, have been in Jodhpur since Wednesday to be with Khan.More news: Russia: Spy poisoning 'in interests' of United Kingdom govt
Khan spent a week in prison in 1998 when first accused of using unlicensed arms to shoot the blackbuck. The community also has pursued the case towards Khan for nearly 2 years also cheered your selection by putting off fire crackers nearby the courthouse and providing sweets.
On Thursday, Salman was sentenced to five years in jail by a Jodhpur court while other accused Saif Ali Khan, Dushyant Singh, Tabu, Neelam and Sonali Bendre were acquitted giving benefit of doubts.The actor was also fined Rs 10,000 in the case.
His acquittal has been challenged. The court will hear Salman Khan's bail plea tomorrow.More news: History created by Chanu in weightlifting at CW Games