At least 19 people were killed and four others suffered injuries when a tipper lorry carrying gravel collided head-on with a public transport bus in Ranga Reddy district of Telangana on Monday, police said.
However police said they were investigating the reason behind his suicide.
Fifteen people, mostly college students, were on Wednesday killed and 30 others injured when a state-run bus in which they were travelling fell down a dug up area adjoining a hilly road in Andhra Pradesh's Anantapur district.
Prohibitory orders were imposed in Delhi and parts of Karnataka. Police kept tight vigil in Kerala. In Gujarat, 50 people were arrested for Thursday's violence.
10 central trade unions have called a nationwide shutdown against 'anti-worker policies' of the central government. Apart from being successful in Bengal, Kerala and NE states, the bandh has also got support from Cong leader Rahul Gandhi and Shiv Sena in Maharashtra.