The Michigan State Police have wrapped up their investigation of the 193-car pileup on I-94 in January and are now issuing tickets.

The first crash that morning occurred at around 9:20 a.m. Jan. 9 in the eastbound lanes of I-94 near Climax.

According to police, during a period of heavy snow, a semi-truck rear-ended a van, which caused it to collide with another car. The van came to rest in the road and other cars began piling up behind it. In total, 60 vehicles -- 34 passenger vehicles and 26 commercial vehicles -- were involved in the crash in the eastbound lanes.

A tanker hauling liquid formic acid and a semi-truck hauling 40,000 pounds of fireworks were also involved in the eastbound crash. The trucks caught fire and nearby areas had to be evacuated.

Westbound drivers who were distracted by the crashes in the eastbound lanes started crashing about three to five minutes later. 133 vehicles -- 50 commercial vehicles and 83 passenger vehicles -- were involved in the pileup in the westbound lanes.

Police said in a news release that the primary cause of the crashes were drivers driving too fast for conditions.

Fifty-eight drivers have been cited for driving too fast for conditions, with 30 being commercial drivers and 28 passenger-vehicle drivers.

In addition to the speeding citations, three other drivers were cited for driving without insurance, one was cited for driving without a license, and one more was cited for having an improper registration plate.

One person was killed and 18 people were injured in the crashes. Five emergency-responders also suffered injuries while assisting at the scene.

The stretch of I-94 was closed in both directions for two days following the crash.

Citations are being mailed or delivered beginning Thursday, according to Michigan State Police.