A controversial bill giving India's government sweeping powers to designate individuals as terrorists passed a major hurdle in parliament Wednesday, as opponents warned the legislation was too broad and open to abuse.

The main opposition Congress party -- which led a parliamentary walkout as the bill was debated -- warned the proposed law was "draconian" and could turn India into a "police state".

The bill has to be passed by the upper house before it becomes law, with the government needing to court votes from smaller parties and independents for it to pass.

Home Minister Amit Shah defended the bill in the lower house Wednesday, saying it was necessary to keep law enforcement agencies one step ahead of those deemed to be terrorists.

© AFP