Law firm Russell McVeagh's investigating a partner, after a complainant alleged the person drunkenly made inappropriate comments to someone at a client event.

Chair of the board, Malcolm Crotty, says the partner is on leave and barred from the workplace during an independent investigation.

He says everyone in the firm knows they expect better - and they won't tolerate unacceptable behaviour.

The investigation will be completed in a couple of weeks, and the firm will say more then.

This follows a wide-ranging sexual assault scandal involving summer student interns, which was revealed earlier this year.