The first stabbing occurred after a group of people had a fight at a home on Madgwick Street in Wynnum just before 5pm.
“During the altercation, a 30-year-old Wynnum man sustained serious stab wounds,” Queensland Police said in a statement.
“He was taken to the Royal Brisbane and Women’s Hospital where he remains in a stable condition.”
Police said not long after members of the public found a man in his 20s on the side of the road with stab wounds on Arundel Street in Alexandra Hills just before 6pm.
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“Police believe the man was assaulted at a Longlands Street, Cleveland address before being driven to Alexandra Hills,” Queensland Police said.
He was taken to Princess Alexandra Hospital with a critical injury.
Police are investigating and believe both incidents are linked.