KANSAS CITY, Mo. -- The family and friends of a teen killed in an auto accident Friday showed up in droves at a memorial Sunday.

"It's really an outpouring from the community to Tyler and his family," Jim Redd, principal at Archbishop O'Hara High School, said. "It's very natural in our Catholic faith to support one another throughout this life and in the next."

On Friday, 17-year-old Tyler Fratzke was killed while riding as a passenger in a vehicle in Greenwood, Mo.

Fratzke's uncle, David Lintz, said his family is still trying to come to grips with losing someone who the family said had such a bright future.

"It's devastating," Lintz said. "You never want it to be your son, so it took a while to understand who was involved and who was deceased."

Lintz said his nephew spent Friday night at a friend's house with his two best friends. At around 11 p.m., the group decided to leave.

"Tyler contacted his mom and asked permission to change houses, essentially," Lintz said.

As the group drove down Smart Road in Greenwood, Jackson County deputies said, Tyler's friend ran a stop sign at 150 Highway. An oncoming car smashed into their SUV, throwing the teens vehicle into a power pole and killing Tyler, who sat in the front passenger seat.

Another passenger in the SUV and the driver of the car were taken by helicopter to the hospital with serious injuries. Soon after, deputies contacted Tyler's family about what happened.

"You can imagine the chaos that ensues after something like this, trying to understand who was involved in the accident," Lintz said.

Hours after his death, Fratzke's cousin started up a Facebook page honoring his memory. The page already has more than 370 members.

Fratzke's relatives said the senior at O'Hara High School was most proud of the missionary work he did in Mexico. They said they also worry about how his friends will deal his death.