The former No. 1-ranked Murray had been scheduled to play his first match on Thursday, but notified organizers he was pulling out after failing to practice on Tuesday.
Andy Murray has withdrawn from the Brisbane International due to a hip injury as his Australian Open preparation took another hit. "I'm aware of the situation at the end of past year (2017) especially because for tennis and the sport it's not good", Murray said of the injury situation.
"I would love it to be number one in the world level but I just want to play". I've really missed it the last six months or so. I started to feel a bit better towards the end but I need to keep improving for sure'.
Murray said: "My expectations aren't massively high right now, because I haven't played for such a long time".
Murray limped through his Wimbledon campaign having first felt the problem during the French Open in June and his title defence ended with a quarter-final loss to Sam Querrey.
Congo security forces kill at least four anti-government protesters
According to the advocacy group Human Rights Watch, two men were shot dead by the Congolese security forces during the protests. The authorities in Kinshasa banned the protest there, saying they did not have the resources to police it.
Fifth-seeded Johanna Konta reached the quarterfinals with a 4-6, 6-1, 6-4 win over Ajla Tomljanovic and Alize Cornet advanced with a 6-1, 7-5 win over Mirjana Lucic-Baroni.
The Brisbane International is one of the main tuneup events for the Australian Open in Melbourne, the first major of the season beginning January 15.
He joined top-ranked Rafael Nadal, who pulled out last week in a bid to continue his recovery from injury, as notable withdrawals from the season-opening event in Brisbane.
In men's first-round matches in Brisbane, U.S. qualifier Michael Mmoh beat Federico Delbonis 6-3, 6-4, Chung Hyeon upset fifth-seeded Gilles Muller 6-3, 7-6 (1), Kyle Edmund rallied for a 6-7 (5), 7-6 (4), 6-4 win over Denis Shapovalov and Denis Istomin beat No. 7-seeded Damir Dzumhur 6-7 (4), 6-3, 6-2.