Two 15-year-old sophomore girls at Nicolet High School were killed early Saturday in a one-car accident in Glendale, authorities said.

Halee Ludowise-Fischer of Glendale and Jennifer Geren of Fox Point died in the crash, which happened at about 1 a.m. at West Good Hope Road and North Seneca Avenue, Glendale police said.

Ludowise-Fischer was driving her parents' car in River Hills when a police officer attempted to stop the vehicle for a traffic violation, police said.

The two took off at a "high rate of speed" in an attempt to elude police and the officer did not attempt to pursue them and turned off his lights and siren, Glendale police said.

The car kept speeding east on Good Hope Road for several blocks before crashing into a utility pole and a tree. The two died instantly, police said.

RELATED STORY: Nicolet students mourn loss of their classmates

There was no evidence that alcohol was involved in the crash. However, police are awaiting results of toxicology tests to determine whether the students had been drinking.

Geren was on the school gymnastics team and Ludowise-Fischer was on the principal's advisory team and student council, Nicolet Superintendent Rick Monroe said.

"They both were very well-liked kids and had a lot of friends," he said Saturday afternoon. "This is going to have a big psychological impact on a lot of students. They both had a wide spectrum of friends."

At Nicolet on Saturday, about a dozen students were gathered in the school lobby and were talking to a school psychologist.

"When the word gets out, kids just come here," Monroe said. "We're glad they're here to console each other and to gather strength from each other."

"We need each other to help us through it."

Student one-act plays that were scheduled to be performed on Saturday were canceled, Monroe said.

Monroe said Nicolet faculty members will arrive at the school early Monday to provide support for the students. There will be special counseling services in multiple rooms all day on Monday, he said.

Monroe said the last time the school needed to use its emergency response plan was in 2009, when Laura Miller, a 15-year-old at Nicolet, died from a brain tumor.