Country singer and songwriter Hardy was hospitalized with "significant injuries" after his tour bus flipped over following a performance in Bristol, Tennessee, on Saturday, he tweeted Sunday.
The singer, whose full name is Michael Wilson Hardy, was released from the hospital and is expected to recover, but the bus driver remains hospitalized, Hardy said in the tweet, adding that four people were on board at the time of the accident, all of whom were treated for "significant injuries."
A preliminary report from the Tennessee Highway Patrol identified the driver as James Hudson, 59, and the passengers as Noah Brown, 36, and Tanner Gallagher, 32. Hudson was wearing a seat belt, according to the report, which said that none of the passengers were.
"Our friend, and bus driver needs your prayers as he is still in the hospital," Hardy tweeted of Hudson. "His family is with him while he is being treated and we're all pulling and praying for him."
"I've been released from the hospital, but ordered by doctors to recover for the next few weeks which may cost us at a couple of shows," he continued. "My team and I will keep the fans updated on that as I rest in the coming days."
The conditions of Brown and Gallagher were not immediately clear.
The bus veered off the right of Interstate 40 and flipped over onto its left side, according to the Tennessee Highway Patrol report.
Hardy had performed at the Country Thunder Music Festival in Bristol, a city about 300 miles east of Nashville, on Saturday night, according to the festival's website.
He is scheduled to perform Saturday in Arlington, Texas, on fellow country singer Morgan Wallen's tour, according to Hardy's website.It is unclear whether the performance will go on.
Hardy was named songwriter of the year at the Academy of Country Music Awards this year. His third and most recent album, "Hixtape: Vol. 2," was released last year.
The Country Thunder festival's Twitter account posted a message of support for Hardy and his team.
"HARDY and his crew have become close members of our festival family, and we are praying for full recoveries for everyone involved in last night’s accident," the tweet read.
Bristol Motor Speedway, the venue that hosted the festival, also tweeted a message of support: "Please keep our friends HARDY and his road crew in your thoughts and prayers for a full and swift recovery."
Hardy concluded his tweet by praising the authorities who responded to the scene.
"God bless our medics and local and state officials for their quick response and incredible service," he wrote.