It seemed like just another day when Santosh Maruti Mane, a driver with the Maharashtra State Road Transport Corporation, left for work to the Swargate bus terminus on Wednesday.
At 8am, he reached Swargate and seemed to be in a normal mood. But he left the entire city shocked when he went on a rampage, mowing down eight people and injuring 27 others.
In his statement to the police after his arrest, Mane said he did not remember anything.
"I don't remember anything that I have done. I also do not know when I actually picked up the bus key and stepped out of office," he said.
The 39-year-old bus driver had joined the state transport corporation in 1999 after procuring a heavy motor vehicle driving license. In August 2009, he was transferred to the Swargate depot in central Pune.
Dr Dilip Burate, who treated Mane around two years ago, said: "Mane had come to me complaining of irrational behavior and mood swings. For almost a month, I treated him as a possible schizophrenia patient, but later he stopped coming to me."
Mane's family members said he would often complain of work stress. "Two years ago he had offered to resign citing stress from driving for long hours," said Mane's elder brother Janat.
The police, however, said Mane had no tendencies to suggest he was "mentally unstable".
"He was in service since 1999. He drove bus for years. How can he be termed as mentally unstable?" Pune police commissioner Meeran Borawankar asked.
MSRTC regional manager Rajendra Patil said Mane has no past record of any accident.