US Rep Tom Graves’ son was airlifted to a trauma center following an injury he sustained during a bicycle race in Calhoun, Georgia on Sunday morning.

Mr Graves’ son is currently in critical condition.

The congressman took to Twitter to update the public on his son John’s condition.

“Yesterday morning our son, John, a member of Georgia Tech’s cycling team, was critically injured during the Calhoun Downtown Criterium and airlifted to a trauma unit. He remains in intensive care and is being cared for by a top-notch team of doctors and medical professionals,” Mr Graves said. “He is a strong boy and showing signs of recovery.”

A criterium is a road race that involves high speeds and sharp cornering while riders race in close clusters on urban roadways.

It is currently unknown if John Graves’ injuries are related to a race-involved crash.

The Calhoun Fire Department joined paramedics around 11 a.m. on Sunday after receiving a report that a race participant was injured.

Mr Graves is a six-term representative from Georgia and a member of the House Appropriations Committee. He is not seeking re-election this year.

Criterium races can be risky for riders. In 2016, 29-year-old bicycle racer Casey Saunders suffered a fatal head injury while racing in the Tour of Kansas City criterium.

Mr Saunders sustained his injury when he crashed head on into a set of race barriers.

He was travelling at 25 to 30 miles per hour at the time of his crash.