Natalee Holloway's family asked Aruba radio and television stations to broadcast a reward offer, though they did not specify an amount, said her mother, Beth Holloway Twitty. The family is promising a reward for anyone who brings the missing teenager safely to a police station or hospital.
Holloway's father, Dave Holloway, who lives in Meridian, Miss., arrived in Aruba on Wednesday to help with the search, according to the Jonesboro Sun.
Holloway, 18, was among 125 seniors from Mountain Brook High School, near Birmingham, Ala., on a five-day trip to the Dutch Caribbean island.
FBI officials, Aruba police and Dutch authorities have been searching for her since Monday, when she did not show up for her group's return flight. Several family members traveled to Aruba to help in the search.
"Everybody has been quite supportive," Holloway Twitty told The Associated Press. "I am not leaving. I am going to have Natalee with me."
Holloway was last seen by friends getting into a vehicle and leaving the Carlos and Charlie's nightclub in the capital of Oranjestad before dawn Monday.
Police questioned and released three Aruban men who said they dropped Holloway off early Monday at the Holliday Inn, where she had been staying about 3 miles from the capital of Oranjestad, said police assistant inspector Jules Sambo. The three were not suspects, he said.
"We don't have any indication as to if she is alive," Sambo said. "The whole population is aware that she is missing. The police are doing everything to find her."