Volunteers with Texas Equusearch scoured the waters of St. Andrew's Bay Tuesday with a sonar device. They want to rule out the possibility that Pam Bigger's body is submerged.

Family members have now been searching for the missing Alabama woman for more than three months, to no avail.

"It's going to take one person that's really seen Pam and to make that phone call and that could solve the situation right then and there. She could be home," said Don Biggers, Pam's husband.

It's a search that can't be done solo. Equusearch volunteers are combining resources with the Bay County Sheriff's Office. The group has taken part in close to 900 searches in seven and a half, years and has had some successes.

"We've worked cases like this before where they have been located alive several months later, so this is one of the things we're really hoping for, but we just feel as though we need to clear some areas just in case something has happened to her," said Tim Miller, Texas Equusearch founder.

Since Pam disappeared from the La Quinta inn in January, investigators have not received any substantial leads.

"We don't know where she is. She could be anywhere from Bay County to Alabama to North Carolina. We just want people to keep a watch for her and hopefully somebody will spot her," said Inv. Mitch Pitts of the Bay County Sheriff's Office.

A $5,000 reward is still available for information leading to the safe return of Pam Biggers. If you have any information please call the Bay County Sheriff's Office at 850-747-4700.

Miller started Texas Equusearch after his own teenage daughter was abducted and murdered in 1984. The group is credited with finding more than 260 missing people alive. They've also recovered the bodies of 82 victims.

Several members of the Biggers family are now volunteering with Equusearch in other missing person cases.