CRETE, Ill. (CBS) — Friends and classmates are mourning after two people were killed in a motorcycle crash in the parking lot of Crete Monee High School, reports CBS 2’s Courtney Gousman.

Investigators spent a good part of the night and early morning at Crete Monee High School trying to figure out what caused this single motorcycle crash.

The Will County Coroner confirms 19 year-old Patrick Boylan and 18 year-old Kelsey McGill of Crete were pronounced dead just before 11 last night.

The Coroner’s office says the two teens somehow crashed the motorcycle in the high school’s parking lot. Crete police are investigating the crash, and aren’t saying much about what could have led to this accident.

Both Boylan and McGill graduated from Crete Monee High School in 2012.

All morning long, friends of Kelsey McGill and Patrick Boylan have been stopping by and dropping of tokens of their affection and trying to figure out exactly what happened last night.”

Car after car, they came to put together the pieces.

“I believe they hit the pole to be honest. Because if you look from here, the skid marks are right there. The bike was like all the way over there,” said Kayla Salinas.

Kayla Salinas and Amy Carollo went to high school with Kelsey McGill and Patrick Boylan. Emotions were overwhelming and sometimes it was hard to get the words out.

“I thought it was just a joke, but it wasn’t a joke,” said Carollo.

Investigators say they plan to use surveillance video from the school’s property to provide more answers.

Autopsies were performed on the two victims today. The Will County coroner’s office is awaiting the results of toxicology tests before releasing a cause of death.

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