"Daniel's family have been contacted, and the committee will ensure every assistance is extended to them", race organisers said in a statement.
It also added to Irwin's North West 200 Superbike race victory and maiden BSB win this season and was PBM's fourth Macau Grand Prix victory.
The race was immediately stopped and Daniel was transferred to hospital.
Dan Hegarty has sadly been killed following a crash at the Macau Grand Prix.
The 31-year-old British rider was taking part in his second Macao Motorcycle Grand Prix.
Coleman quits Wales for Sunderland
Coleman led Wales to the semi-finals of UEFA EURO 2016, the nation's greatest achievement in their history in the competition. His future with Wales was in doubt from the moment they failed to qualify for Russian Federation 2018.
Hegarty had raced motorcycles throughout a 17-year professional career including unsafe street races such as the classic in Macau.
Improving year by year, he took the Privateers' Trophy in 2016 with a series of strong results culminating in an eleventh place finish and a fastest lap of over 128mph.
Broadcaster TDM said the last time a rider died at the Macau race was in 2012 when Portuguese Luis Carreira crashed at the same bend.
Northern Ireland's Glenn Irwin was announced the victor after the race was stopped on the sixth lap. That's road racing and it's tough.
All three riders were visibly upset when they mounted the podium, and there was a tense atmosphere among teams gathered in pit lane as fears for Hegarty spread around the track.