The former club captain was handed the reins following John McGlynn's sacking and, as things stand, is due to lead the team to Easter Road for the Clydesdale Bank Premier League meeting with Hibernian.
However, club legend John Robertson, former Tynecastle assistant boss Peter Houston and sacked Bristol City manager Derek McInnes are all reported to be on a shortlist to takeover the Gorgie dugout role.
And Locke claims he has had no information as to whether an appointment will be made ahead of Sunday's match.
He said: "I have no idea. There's nothing happened as far as I know, so we are just taking the line we have done for the last week and a bit.
"Myself and Darren Murray are in charge for the moment, and if anything happens today or tomorrow then I'm sure the club will let everybody know.
"I'm preparing the team at the moment. If anything happens, then great. If not, then it's business as usual."