A plane has crashed into the Swan River in front thousands of shocked Australia Day punters who had gathered at the shore for the skyworks on Thursday.
It is understood a pilot and a passenger were aboard the plane, but there was no information on the extent of their injuries yet.
According to a witness who spoke to the West Australian Newspaper the aircraft was ripped in two upon impact.
"I was watching the show and all I saw was the plane just nose dive into the water," witness Natasha Eyles told the West Australian.
"As it hit the water you could the plane break into two.
Witness Craig Newill was with his family when the plane went down.
"We were so stunned and shocked," he said.
"We could see him stall.
"His wings were pointing to the sky and to the water and we thought 'this is not good' then we saw it break into two pieces."