Jeremy Renner's nephew recalled seeing his uncle in a 'pool of blood' during the snow plow accident: 'I didn't think he was alive'

• Jeremy Renner was critically injured in a snow plow accident while aiding his nephew.
• His nephew recalled the harrowing moment in an exclusive interview with ABC News' Diane Sawyer.

Jeremy Renner's nephew wasn't sure if his uncle was still alive after a 7-ton snow plow ran the actor over and left Renner in critical condition back in January.

"I just perfectly see him in a pool of blood coming from his head, and I ran up to him and I didn't think he was alive, Renner's nephew, Alexander Fries, said in an interview with ABC News anchor Diane Sawyer.

Renner was hospitalized after a snowcat rolled over the "Avengers" actor near Mt. Rose Highway in Reno, Nevada, on January 1.

According to an incident report obtained by CNN from the Washoe County Sheriff's Office, Renner was trying to stop a snowcat from hitting his adult nephew. The snow plow was initially being used to pull Renner's nephew's truck out of the snow. But then it began to slide sideways.

"The Pistenbully snow groomer began sliding causing Renner to exit the vehicle without setting the emergency brake," the report stated, according to CNN.

Renner previously said in an Instagram post that he broke more than 30 bones.

Sawyer listed the injuries during the interview with the actor: "Eight ribs broken in 14 places, right knee, right ankle broken, left leg tibia broken, the left ankle broken, right clavicle broken, right shoulder broken, face eye socket, the jaw, the mandible broken, lung collapsed, pierced from the rib bone — your liver."

When Sawyer asked if Renner remembered the pain, the actor said he was "awake through every moment."

Despite the injuries, Renner said he would attempt to save his nephew again "in a heartbeat."

The Sawyer interview will air April 6 at 10 p.m. ET on ABC.