Two Florida Highway Patrol troopers initially tried to interview Woods Friday evening at his home, according to The Associated Press, but Nordegren turned them away, saying Woods was sleeping.
Investigators returned to Woods' home Saturday around 3 p.m. for what they thought was a scheduled appointment, only to emerge less than an hour later.
"The Florida Highway Patrol has received information that Tiger Woods and his wife were not available to be interviewed by state troopers, as we had previously scheduled," Montes said in an e-mail afterwards. "This announcement came from his agent. Troopers were asked to return [Sunday]."
Confusion over Woods' condition after the accident seemed to fuel rumors.
The Highway Patrol put out a release Friday afternoon saying, "Injuries: Serious." But a spokesman later clarified that the agency's reports always classify people's conditions as serious if they are taken to a hospital.
Woods' publicist, Glenn Greenspan, released a statement later Friday afternoon: "Tiger Woods was in a minor car accident outside his home last night. He was admitted, treated and released today in good condition.''
The hospital, through Greenspan, later put out a similar brief statement.
Officials have said Woods pulled out of the driveway at his residence in an exclusive subdivision called Isleworth, near Orlando, Fla., and began to drive on Deacon Circle when he struck the hydrant.
Investigators said alcohol was not involved. The Associated Press reported that the vehicle's airbags did not deploy.
Since the accident, police have talked of an ongoing investigation and said possible charges were "pending."
However, Florida legal experts told ABC News on Sunday that it appeared charges were unlikely.
Even so, besides the possibility of a resisting arrest charge stemming from any false statement to authorities, Woods could be charged with careless driving -- a civil infraction carrying a fine of less than $200 -- for hitting the fire hydrant and tree, they said.
Making charge less likely, they added, was the apparent absence of witnesses to say Woods actually was driving carelessly and the fact that accident occurred on an apparently private road not open to the public.
ABC News' Susan Donaldson James and Jason Stine contributed to this report.