eastbank esplanade

A 20-something homeless man stabbed another, older homeless man on Sunday night along the Eastbank Esplanade around 8 p.m. (Bruce Ely/The Oregonian)

(Bruce Ely/The Oregonian)

A homeless man in his mid-20s attacked a 42-year-old man with a machete around 8 p.m. along the Eastbank Esplanade on Sunday, according to Portland Police.

The 42-year-old victim, who police said also was homeless and likely knew his attacker, sustained a serious injury to his arm but is expected to survive. He was transported to a local hospital.

Numerous people called 9-1-1 or flagged down police after the stabbing occurred in daylight during a busy evening on the public walkway North of Taylor Street between the Morrison and Hawthorne bridges.

Police couldn't find the attacker who was described as being in his 20s with long hair or a bandana, no shirt and jeans.

Witnesses told police the men had been involved in a fight before the attacker pulled the knife from a sheath on his belt. The man then ran north along the Esplanade, witnesses said.

Police applied a tourniquet to stop the victim's bleeding.

Police asked that anyone with information about the incident should contact Assault detectives at 503-823-0400.

-- Laura Gunderson

lgunderson@oregonian.com; 503-221-8378

@lgunderson