The Garda Commissioner has said he believes the Criminal Justice Bill is 'necessary, proportionate and appropriate.'
Speaking at an event to commemorate the 50th anniversary of women entering the force, Commissioner Fachtna Murphy said the measures outlined in the bill are required by gardaí.
Mr Murphy's comments came in the wake of renewed calls for more debate on the bill.
Opposition TDs have warned that the legislation could face a constitutional challenge if it is not fully discussed.
The Bill is aimed at tackling criminal gangs and among its provisions is a proposal to try gang members in the non-jury Special Criminal Court.
It is due to finish all stages in the Dáil before the start of the summer recess tomorrow evening and then go to the Seanad.
Opposition TDs have appealed to the Government to delay the final stages of the legislation until the Dáil returns in September.
Fine Gael's Charlie Flanagan said his party supported the Bill, but had concerns about the details, pointing out that the courts are not sitting in August anyway.
Labour's Pat Rabbitte said it was wrong to suggest that hundreds of gangsters would be locked up as soon as the legislation was passed.
While Alan Shatter of Fine Gael warned the constitutionality of the legislation was certain to be challenged if it was not properly debated.
Meanwhile, Irish Human Rights Commission President Dr Maurice Manning said there are serious flaws in the Bill and there is an urgent need for more debate on its proposals.
