Sena activists barged into the bus and kidnapped the two and took them away in an auto rickshaw. However, both of them were set free after few hours.
Kerala MLA CH Kunhambu told CNN-IBN, news channel that he suspected Ram Sena to be behind the abduction.
"I strongly believe that Sri Ram Sena and Bajrang Dal activists were behind this incident. The boy was from a different community. They were going back to their college after vacations. I have filed complaints with the police," he said.
"The incident happened in the afternoon. I believe that the driver and conductor of the bus are involved in the incident. They contacted these gundas (anti-socials) to attack. She was forcibly taken away in an auto," he added.
Shruti and her friend are students of second year pre-university course at the St Alosyius College in the city. The boy has been identified as Shabib and is the brother of Shruti's classmate.
OneIndia News (With inputs from Agencies)