Houston Texans head coach Gary Kubiak was released from the hospital on Tuesday.
He was cleared by doctors to leave the hospital earlier in the day to return home.
It is doubtful Kubiak will be available to coach the Texans when they play the Cardinals Sunday in Arizona.
He is expected to return to work next week.
Texans executive vice president and general manager Rick Smith announced on Monday Kubiak would be in the hospital for at least another 24 hours.
Kubiak was rushed to the hospital Sunday night after he collapsed at the end of the first half of the Texans 27-24 loss to the Indianapolis Colts at Reliant Stadium.
Sources confirmed for FOX 26 Sports that Kubiak suffered a transient ischemic attack or TIA.
In lay terms, a TIA is a change in a person's neurological status causing stroke-like symptoms that last less than 24 hours.
The Texans said Sunday night that Kubiak did not suffer a heart attack.
Defensive coordinator Wade Phillips ran the Texans in Kubiak's absence against the Colts and is expected to continue in that role on Sunday against Arizona.
The Texans released the following statement on Tuesday:
Houston Texans Head Coach Gary Kubiak was released from the hospital today. After multiple tests and diagnostics, it was concluded Kubiak experienced a transient ischemic attack (TIA). He is expected to make a full recovery.
It has not been determined when Kubiak will return to Reliant Stadium to resume his head coaching duties.
Kubiak released the following statement on Tuesday:
I want to thank my family, the McNair family, the Texans organization, the doctors and staff at Houston Methodist and the entire Houston community for all the love and support we have received over the past three days. I've been through an ordeal and my focus now is to get back to good health. Doctors have told me I will make a full recovery but we have not determined when I will be cleared to return to the office. Again, thank you for the support and concern.