Vice president's son undergoing medical evaluation at Houston hospital

Beau Biden, son of the vice president and Delaware attorney general, has flown with his father to Houston for medical evaluation following an episode last week of “disorientation and weakness,” the vice president’s office said Tuesday.

The brief statement did not go into detail but said the younger Biden, 44, experienced the episode “while on vacation with his family last week.”

Beau Biden suffered a mild stroke in 2010. He became Delaware's attorney general in 2007.

There was no word on how long either Biden was expected to remain in Texas.

Jason Miller, a spokesman for the Delaware Department of Justice, said Beau Biden spoke by telephone with Chief Deputy Attorney General Ian McConnel over the weekend, and had been in touch with his office Monday evening.

Officials with Biden's office said they had no comment beyond the prepared statement Monday, but that further information would be forthcoming.

Biden's Twitter account on Sunday posted a photo of him and his father sitting on a porch and smiling while sending a message of encouragement to a Delaware team that was in the Little League World Series.

"I was just a little off," Biden later explained to The Associated Press when asked about his stroke. "My arm didn't feel right. I was able to move it, but I just wasn't myself."

"Stroke was the farthest thing from my mind when I went in," Biden added then, saying he didn't know enough to be scared, or to reflect on the brain aneurysm that nearly killed his father in 1987 at age 45.

Beau Biden is the eldest son of Vice President Biden. After the 1972 accident that killed his wife and daughter and critically injured brothers Beau and Hunter Biden, the vice president devoted himself to caring for his two sons as a single father.

Beau Biden served a yearlong deployment to Iraq with his Army National Guard unit, returning stateside in 2009.

The Associated Press contributed to this report.