A second suburban Oklahoma City high school student died after a group of cross-country runners was struck by a pickup truck that authorities say was driven by man whose son was killed in a traffic crash over the weekend, a school official said Tuesday. Sophomore Yuridia Martinez, who had been hospitalized in critical condition since the Monday crash, has since died, Dustin Horstkoetter, director of safety and security at Moore Public Schools, said.

Officials had previously said that senior Rachel Freeman was killed when the truck slammed into members of the school's cross-country team.

Moore police Sgt. Jeremy Lewis said authorities believe the students were running on the sidewalk when they were struck. Authorities had previously said they were running along a street outside Moore High School.

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Three other students remained hospitalized with injuries. Student Kolby Crum was in critical condition at Oklahoma Children's Hospital, according to spokeswoman April Sandefer, while students Joseph White and Shiloh Hutchinson were in fair condition. Student Ashton Baza was released Monday night.

The ages of the students have not been released.

Freeman was set to sign a track and field scholarship this week with Ouachita Baptist University in Arkadelphia, Arkansas, Horstkoetter said. In a Twitter post, War Moore Run, an annual 5K race, called Freeman "an elite runner."

Today we mourn the loss of Rachel Freeman, a senior at Moore High. Rachel ran with the MHS cross country team. The past 3 years she crossed the finish line of our race as an elite runner. She finished as the first overall woman in 2017 & as the third overall woman in 2018 & 2019. pic.twitter.com/QEW618QwCg — MooreWarRun (@MooreWarRun) February 4, 2020

Max Leroy Townsend, 56, has been booked into the Cleveland County jail charged with first-degree manslaughter and six counts of failure to stop and render aid. CBS affiliate KWTV reports that his son, Cody Townsend, was killed in a crash on Sunday near Buck Thomas Park.

TEAM COVERAGE: @CalebCalifanoTV and I are live with more on that 💔 news out of #Moore. 1 Moore HS senior is dead and 5 others hurt after being hit by a car. Police say the driver is in custody. More on the investigation and how the community mourning. @NEWS9 pic.twitter.com/qYMS0alrNq — Ashley Holden News 9 (@ashleyvholden) February 4, 2020

Police arrested Max Leroy Townsend, 57, in the fatal crash. He was booked into the Cleveland County jail on charges of first-degree manslaughter and six counts of failure to stop and render aid. Townsend was initially reported to be 56.

Police suspect alcohol was a factor, according to Lewis, who said results from toxicology tests were pending.

"That won't be for quite a while," Lewis said. "That's a blood test that requires being sent to a lab."

Townsend has a lengthy criminal history in Oklahoma that includes multiple convictions for driving under the influence, public intoxication, possession of drugs and stolen property, stalking and child abuse, court records show. He served time in prison on convictions for child abuse, receiving stolen property and possession of drugs, but was released in 2009, state prison records show.

CBS affiliate KWTV reports that his son, Cody Townsend, was killed in a crash on Sunday near Buck Thomas Park.

Horstkoetter said Moore schools are grieving and noted that it was not the first time the school system has been hit with tragedy, alluding to a tornado that destroyed an elementary school in 2013, killing seven students.