The Los Angeles Fire Department reports that three people died and three were left in critical condition after a SUV hit pedestrians Tuesday on a North Hollywood metro sidewalk near a metro station.

The Los Angeles Police Department said the incident happened just before 6 p.m. at a heavily-trafficked crossroads where at least five people were hit by a white SUV. Emergency personnel were called to the scene and at least three people, and the driver was gone to hospital.

The cause of the accident so far has not been revealed and the investigation is continuing. The authorities have also dismissed any possible scenario leading to the incident.

Whether it was done on purpose or not is a mystery, said LAPD Captain Warner Castillo at his news conference Tuesday night.

The name of the driver, who remains a mystery, is thought to be in his 60s. He’s being investigated to find out if he was under the influence at the time of the accident, they said.

Authorities are still working to determine what led to the fatal incident, and the three people critically wounded are under medical care.

Police have not disclosed any additional details of the victims or said if the driver is being charged with any offences. Investigators are supposed to get information from the scene and talk to witnesses to determine how the SUV crashed into pedestrians near the metro station.

The incident has sparked a major investigation right now by Los Angeles authorities and their efforts to determine if the crash is intentional or accidental.