KITCHENER -- Police were in Wellesley Township investigating a fatal single-vehicle crash on Wednesday afternoon.

According to a social media post sent at around 3:30 p.m., it happened in the area of William Hastings Line.

In a tweet on Wednesday evening, officials confirmed that the crash was a fatality and said there was one person in the vehicle.

They say the vehicle left the roadway, struck a tree and then was engulfed in flames.

Police say they are still working to confirm the person's identity.

William Hastings Line was closed between Manser Road and Hutchison Road while police investigated.

Police say speed is believed to be a factor in the crash.

Roads in the area reopened around 11 p.m. Wednesday.