Houston Texans head coach Gary Kubiak collapsed on the field during half-time of the team's Sunday night matchup with the Indianapolis Colts, it was reported during NBC's half-time show.

Rick Smith, the general manager of the Texans, referred to the incident as an 'episode' during a post-game interview on NBC, saying the coach felt light-headed and dizziness. Smith also said Kubiak is now stable.

He added the coach could return to the team as soon as Monday.

However, Smith said Monday morning that the coach remain in the hospital for at least 24 hours, according to usatoday.com.

Replays showed Kubiak in a squatting position before going down to the turf as the teams were heading into the locker rooms for halftime.

Sideline reporter Michelle Tafoya said she didn't see Kubiak go down, but said he was wincing in so much pain that he couldn't open his eyes. However, Tafoya said he was also speaking with the medical personnel as he was surrounded on the ground.

Kubiak, 52, was carted off the field strapped to a gurney, and placed in an ambulance.

Tafoya later reported that Texans assistant coach Wade Phillips told her that Kubiak's blood pressure was normal, but he was taken to the hospital as a precaution.

The Houston Texans have said Kubiak was never unconscious during the incident, and had ruled out a heart attack early on, according to a report from Tafoya in the third quarter.

Phillips took over the head coaching duties for the second half as the Texans squandered what was a 21-3 lead at the break. The Colt mounted a surprising comeback for a 27-24 victory over Houston.