Police said they have not been able to locate "Bubbles," who also goes by the name "Bubble Man." Drum circle attendees told the Deseret Morning News the man has been a regular fixture at Liberty Park, attracting children with a machine that creates bubbles. He has not been seen at the circle for weeks.

"Mr. Bubbles has always got kids around him," said Katie Taylor, who was questioned by police. "He is kind of a weird guy."

FBI Special Agent Bob Wright would not say if the men were considered "persons of interest" in the case.

"A number of good pieces of information have been developed," he said Sunday.

More than a week after Destiny vanished into the night, volunteers continue to venture out into the hot summer temperatures to try to find her.

During today's Days of '47 Parade, searchers will be walking along the parade route handing out fliers about Destiny and talking to people.

"There's supposed to be 100,000 people on the parade route," said search coordinator Shane Siwik. "They can be looking out for her."

Volunteer turnout was light on Sunday with 419 people signing up to search. Many people were attending church services, where bishops and pastors encouraged members of their faiths to go out and search for Destiny over the Pioneer Day holiday.

Salt Lake City Mayor Rocky Anderson was at the volunteer search center on Sunday, leading briefings for teams of volunteers. The family of missing Spanish Fork teenager Kiplyn Davis also showed up at the volunteer search center to offer their support.

"We've been praying for them," Kiplyn's mother, Tamara Davis, said of the Norton family.

More than a decade after 15-year-old Kiplyn vanished, the Davis family is finally getting some answers about what happened to her. Last week, a federal jury convicted Timmy Brent Olson, 28, of perjury and lying to a federal agent about his involvement in her disappearance. He is facing trial in Provo this fall on murder charges.

At the volunteer search center set up at an LDS church at 445 East Harvard Ave. (1110 South), Destiny's parents spent time Sunday surrounded by family and friends.

"I can't even walk into the house anymore without getting emotional," Rachael Norton said. "I'm lost. I'm honestly lost. With all these people looking and as much ground as we've covered, there's nothing. No sign of her at all."

Norton said she is staying positive and "not thinking any bad thoughts yet."

Across the street, her husband, Ricky, was taping fliers of his missing daughter to a car. He squinted in the hot sun and struggled with a roll of tape as he tried to plaster the car with fliers. While he did it, friends and family came by and gave him reassuring pats on the back.