A man has been arrested following a serious assault at Elizabeth Park.

According to SAPOL:

Police and paramedics were called to Billing Street about 1pm on Tuesday 1 April by reports of a violent altercation.

A suspect was seen leaving the scene in a Ford SUV which collided with a tree.

When police arrived, they located a 36-year-old man from Elizabeth Grove with serious stab wounds. The man was treated at the scene by paramedics before being rushed to hospital. His injuries are considered life threatening.

A 35-year-old man from Elizabeth Park was arrested at the scene and is currently being interviewed by police.

Billing Street and parts of Alexander Street has been closed to all traffic while emergency services are at the scene.

Northern District Police advise that the incident is not random and both men are known to each other.

Anyone who witnessed this incident, has dashcam or CCTV footage that may assist the investigation, or has any other information is asked to contact Crime Stoppers on 1800 333 000 or online at www.crimestopperssa.com.au