Tiger Woods' mother-in-law has been released from an Orlando-area hospital after being treated for stomach pains.

Health Central Hospital spokesman Dan Yates said Barbro Holmberg was released Tuesday afternoon (pm news conference), about 11 hours after she was admitted. She went back to Woods' mansion.

Someone called 911 from the golfer's Orlando-area mansion about 2:35 a.m.

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Barbro Holmberg was taken by ambulance (raw video | images) to Health Central Hospital, where she was in stable condition later Tuesday, hospital spokesman Dan Yates said. He said her condition was not serious but he could not be more specific because of privacy laws.

"Barbro Holmberg, mother of Elin Woods, was admitted to Health Central Hospital with stomach pain. She's in stable condition and is currently undergoing evaluation," Yates explained in an earlier press conference (am news conference).

Holmberg, who arrived in the U.S. a few days ago, lives in Sweden and is the mother of Woods' wife, Elin.

Health Central is the same hospital where Woods was treated after he crashed his sport utility vehicle outside his home last month.

Yates said Holmberg was in a private room and the family has hired additional security to keep the media away. He said family members have visited her, but he would say who.

Moments after the ambulance arrived, a black Cadillac Escalade, similar to the one that Tiger Woods was driving during his infamous crash, was spotted driving into Health Central. Witnesses say that a blonde woman, who looked similar to Tiger's wife Elin, was driving the vehicle. The license plate on the Escalade spotted had only one character that was different from the Escalade that Tiger was driving when he crashed.

An Eyewitness News crew, a short time later, spotted what is believed to be the same Escalade leaving the hospital (raw video | images).

Media attention has been focused on the world's No. 1 golfer since he hit a hydrant and a tree around 2:25 a.m. on the Friday after Thanksgiving. The Florida Highway Patrol last week cited Woods for careless driving and fined him $164.

The accident -- and Woods' refusal to answer questions about it -- fueled speculation about a possible dispute between him and his wife, Elin.

Just days before the crash, a National Enquirer story alleged Woods had been seeing a New York nightclub hostess, Rachel Uchitel, who has denied it. After the crash, Us Weekly reported that a Los Angeles cocktail waitress named Jaimee Grubbs claims she had a 31-month affair with Woods.

Last week, Woods issued a statement saying he had let his family down with unspecified "transgressions" that he regrets with "all of my heart." He did not elaborate.

A police report on the crash released Monday showed that a Florida trooper who suspected Woods was driving under the influence sought a subpoena for the golfer's blood results from the hospital he was taken to after the crash, but prosecutors rejected the petition for insufficient information.

A witness, who wasn't identified in the report, told trooper Joshua Evans that Woods had been drinking alcohol earlier. The same witness also said Woods had been prescribed two drugs, Ambien and Vicodin.

The report did not say who the witness was but added it was the same person who pulled Woods from the vehicle after the accident. Woods' wife, Elin, has told police that she used a golf club to smash the back windows of the Cadillac Escalade to help her husband out. His injuries were minor.

The sister of a neighbor who called 911 after the crash told troopers that Woods' mother, Kultida, and mother-in-law, Barbro Holmberg, were also at the scene, but the AP has not been able to confirm that.

Eva Malmborg, a spokeswoman for Holmberg, said Tuesday that she could not comment on the reports about a woman being taken from Woods' neighborhood to the hospital.

"I haven't been in contact with her and like I said I don't know where she is -- and so I can neither confirm or deny anything," Malmborg said.

Malmborg confirmed Holmberg had taken a week's leave from her job as Gavleborg county governor in central-east Sweden, but said she did not know where Holmberg had gone.

There was no sign of emergency workers later Tuesday morning at the Woods' gated community, where luxury SUVs and cars drove in and out as a few reporters and television news trucks milled around outside.