"Gone too soon Siddharth.. u shall be missed. Condolences to the family .. RIP," Salman Khan tweeted.
Siddharth Shukla died on Thursday. He was 40. Shukla, who is survived by his mother and two sisters, was dead when he was taken to the Cooper Hospital in Juhu around 10.20 AM, PTI quoted authorities at the hospital. The cause of his sudden death is not immediately clear.
"He was brought dead to the hospital. The cause of the death will be known after the post-mortem is conducted... it will take some time" Cooper Hospital Dean Dr Shailesh Mohite said, as per PTI reports.
Salman Khan hosted the 13th season of 'Bigg Boss'. He was often seen giving Sidharth tips on anger management.
Other film and TV celebrities also expressed their condolences. Manoj Bajpayee took to Twitter and wrote he was yet to come to terms with the actor's death.
"OMG! This is so shocking! Words will fail to describe the shock and sense of loss of his near and dear ones! May he rest in peace," he said.
Akshay Kumar said he was saddened to know about Shukla's passing away.
"I didn’t know him personally but it’s heartbreaking to know of such a talented life gone so soon. Om Shanti," he added.
Filmmaker Farah Khan paid tributes to the actor on Twitter.
"Can this year get any worse??! Shocked and extremely saddened to hear about @sidharth_shukla's demise. My heart goes out to his family," she wrote.
Shukla began his career in showbiz as a model and made his acting debut with a lead role in the television show “Babul Ka Aangann Chootey Na”.
He later appeared on shows such as “Jaane Pehchaane Se… Ye Ajnabbi”, “Love U Zindagi” but became a household name with “Balika Vadhu”.
Filmmaker Hansal Mehta wrote Shukla's passing away was tragic and hoped his death was given dignity.
"This is extremely sad and disturbing. Hope this time for sadness, reflection and mourning does not get converted into a Tamasha by some idiots," Mehta wrote.
Actor Riteish Deshmukh said he was "shocked beyond words".
"Gone too soon…. Condolences to his family, loved ones. - He was loved by millions. #SiddharthShukla you will be missed - rest in peace brother. Om Shanti." "Shocked and sad to know about Sidharth Shukla. Gone too soon. Prayers. Rest in peace," tweeted actor comedian Sunil Grover.
Actor Rajeev Khandelwal took to Twitter and wrote, "It is really really sad. Beyond words." Apart from featuring on TV shows, Shukla has also made his Bollywood debut in 2014 with the Karan Johar-produced “Humpty Sharma Ki Dulhania” where he had a supporting role opposite Varun Dhawan and Alia Bhatt.