Enlarge AP Lady Bird Johnson, former first lady, right, and daughter Luci Baines Johnson, are pictured in this Aug. 27, 2002 file photo as they attend the annual wreath-laying ceremony where former President Lyndon B. Johnson was buried after his death in 1973, in Stonewall, Texas.

Johnson, 94, who has been hospitalized with strokes in the past, did not suffer a stroke this time, said longtime family friend Neal Spelce. He did not disclose the symptoms that led to her admission to Seton Medical Center. He said her doctors are running tests.

One of her two daughters, Luci Baines Johnson of Austin, is with her and daughter Lynda Johnson Robb was expected to arrive in Austin tonight, Spelce said. Her husband, Lyndon Baines Johnson, died in 1973.

"Mrs. Johnson is resting comfortably and is awake and lucid," Spelce said. "Her family is with her. ... I had a nice little visit with her."

He said there are no planned news briefings at the hospital, and that it was not known when Johnson might be released.