[UPDATE] Suspects in JHB highway shootout linked to string of robberies

The suspects also face new charges of robbery, attempted murder, hijacking and others.

Suspects involved in a shooting on Katherine Street near Grayston Drive are questioned by police. Picture: Thomas Holder/EWN

JOHANNESBURG - Police say the suspects involved in a shootout on the M1 highway have been linked to a string of robberies in KwaZulu-Natal.

The suspects also face new charges of robbery, attempted murder, hijacking and others.

One of the men was hurt during the exchange near the Grayston Drive off-ramp in Sandton earlier today, while three others were arrested.

Police are following a lead on the fourth suspect's whereabouts and say they expect to make an arrest soon.

WATCH: Cops arrest three after Sandton shootout

Provincial spokesperson for the South African Police Service Kay Makhubele says the suspects were apprehended on their way to committing other robberies in Sandton.

Earlier, it was being reported that at least four people were wounded.

Free flowing traffic has now been reported in the area.

Earlier, ER24's Russel Meiring said, "The details surrounding the incident aren't yet known to us but local authorities will be investigating this matter further. We do urge members of the public to avoid this area as there will be a heavy traffic delay due to the local authorities' presence."

Witnesses on the scene of the dramatic chase and shootout between police and suspects say they were left reeling by the shots.

A man says he was sitting in his office when he heard gunshots.

"I was sitting my office and there was a rain of gunshots that went off, and a helicopter overhead. We came running outside and saw all the commotion."