Several people have been arrested in Perth following mass Australia Day brawls that left two police officers seriously injured.

Police are investigating multiple riots which broke out across the city, including one incident in East Perth that involved bricks and broken pavers being hurled at officers as they responded to a dispute.

One officer sustained a shoulder injury and another’s head was injured while attending an incident close to McIver train station early on Friday morning.

Police were called to nearby Moore Street about 1.20am following reports of a large group fighting.

As officers began dispersing the crowd, bricks and broken pavers were thrown before police made several arrests.

Two officers were transported to a nearby hospital, where they underwent medical treatment.

Multiple suspects were taken into custody and an investigation is ongoing.

It comes after a separate brawl at the central Perth train station on Thursday night following Australia Day celebrations.

When police attempted to break up a group of about 150 people, several people threw rocks and bottles in the direction of officers but no injuries were reported.

A police spokeswoman said multiple people were arrested and investigations into the incident were also ongoing.

WA Police Union acting president Paul Gale condemned the attacks on police officers.

“Not only is crime becoming more violent in Australia, but our politics are becoming more violent as well,” Mr Gale said.

“I have one simple message for anyone thinking about carrying out political violence against a police officer: If you have a problem with the politicians, take it out at the ballot box. Don’t take it out at police officers who are working unsocial hours and doing their best to protect property and keep the community safe.”

He added that WA Police Union would provide support to any of its members injured in the brawls.

– AAP