Also note Prevention of Corruption Amendement Act which requires prior sanction to prosecute serving public officials and makes giving a bribe a specific offence [1][2]. This will probably pass in coming weeks.

[1] http://www.prsindia.org/billtrack/the-prevention-of-corrupti...

[2] http://timesofindia.indiatimes.com/india/Govt-servants-may-g...