A book on Malegaon blast accused Lieutenant Colonel Prasad Purohit was launched here on Sunday amid protests from some groups who claimed it was inappropriate to hold such an event when the trial in the case was underway.

The launch of `Lt Colonel Purohit - The Man Betrayed` written by Smita Mishra took place in SP College in the presence of retired Indian Police Service officer Jayant Umranikar, with the programme being hosted by defence expert and television personality Major Gaurav Arya (retired).