Four technicians of a private start-up company were involved in some experiment when an explosion occurred suddenly at around 2.20 pm, they said.
The injured have been admitted to a private hospital where their condition was said to be stable, police said.
A release from the IISc said an FIR had been registered by Sadhasghivanagar police and investigations were on.
Though the nature of explosion and its cause were yet to be established, it was suspected that the incident occurred due to a blast in a cylinder containing some gas, police said.
Assistant Commissioner of Police Niranjan Raj Urs told PTI that the start-up company Superwave Technologies Private Limited was having a tie-up with the IISc for carrying out experiments pertaining to its research.
"Forensic experts would ascertain the actual cause of the accident but it seems like a cylinder blast," he said.
(This story has not been edited by Business Standard staff and is auto-generated from a syndicated feed.)