A piece of metal fell off a moving tractor trailer recently, flying through the windshield of a van and injuring a motorist inside.

The accident happened on Wednesday, June 6th at around 12:03 p.m. in Laurel County, Kentucky.

According to Lex 18 News, a tractor trailer was traveling north on Kentucky Route 229 when a piece of metal from the back inside wheel of the trailer broke off the big rig and struck the pavement, flying into the air and eventually crashing through the windshield of a van traveling behind the big rig, landing on the passenger side of the van.

The truck driver apparently did not notice the incident and continued driving for quite a way before noticing smoke coming from the back of the trailer. He then pulled over onto the shoulder of KY 229 and remained there until investigators arrived.

The trucker, Travis Owens, was not injured in the incident. The 60-year-old van driver, Tony Jackson, was also uninjured in the incident but his wife, 58-year-old Mary Jackson, suffered a head injury from the flying metal and had to be transported to a nearby hospital for treatment. Her current condition is not known.

It is not known whether the truck driver was issued a citation for the incident, which is still under investigation. It is also not yet clear what exactly the piece of metal was, or why it came off the big rig in the first place.