Gautam Virendra Singh is suspected to be one of the three men who attacked and robbed Khare in the Civil Lines area in Delhi on the evening of July 8.
Police said that after they traced him to a house in Ram Nagar slum in Thane city, Gautam tried to slash himself on the face and head with a razor.
He was then taken to the local Prathamesh Hospital. He would be taken to Delhi in the next two days, police said.