Windsor police are investigating an early-morning triple stabbing Saturday that sent a man to hospital with serious injuries.

Police say it happened in the 2800 block of Tecumseh Road West around 4 a.m.

Two people were arrested at the scene.

Police say an argument between three people broke out before the violence.

Another man and a woman were sent to hospital with minor injuries.

A witness called it a horrible scene.

"When she come out, they were both down in the basement staircase fighting and just covered totally in blood."

A man told CTV News his grandson was one of the men involved.

"He had five wounds to the head and he has some body wounds, but we're not sure. And a leg wound, a bad one. And the girlfriend had three (stab wounds) - one in the arm, the face and the neck I believe."

The major crime unit is investigating.