A 29-year-old woman vanished after leaving a Birmingham bar with two men, police said, and she texted her friends that she was in trouble, according to a family member.
Paighton Laine Houston disappeared after leaving the Tin Roof bar at about 10:45 p.m. Saturday, the Birmingham Police Department said.
Houston was spotted leaving the bar with two men and it appeared she left with them willingly, police said.
Houston and a couple of her friends had gone to the local bar after work. "At about 12:14 p.m. that night, she sent a text to one of the friends she was at the bar with, stating that she didn't know who she was with, and that she felt like she was in trouble," according to her brother Evan Houston.
"It was like Paighton to check in... but it wasn't like Paighton to send a text like that," Evan Houston told "Good Morning America."
The 29-year-old "can handle her own self," her brother said, so "the fact that she was reaching out for help and saying she was in trouble was a big red flag."
In a message to his sister, Evan Houston said: "If she can hear this -- mom and dad, me, everyone that is around you, the whole community is searching for you, looking for answers, and we're not gonna stop until we find you and get you home safe."
Paighton Houston, of Trussville, Alabama, is described as standing at 5 feet 2 inches tall and weighing 123 pounds, police said. She was last seen wearing ripped jeans, a coral-colored T-shirt and blue Converse sneakers, police said.
Anyone with information is asked to call 911 or the Birmingham Police at 205-297-8413.
ABC News' Alex Faul and Rachel Katz contributed to this report.