ORLANDO, Fla. -- Late Friday afternoon, Channel 9 confirmed new information about the disappearance of Jennifer Kesse. The 24-year-old woman has been missing for more than two and a half weeks.

Police are confirming that Jennifer may have left her home at Mosaic at Millenia on Monday night or Tuesday morning looking for a roadside mailbox to mail a package. They will not say where or whether she made it there, but the package is also missing.

Jennifer's family now confirms her younger brother Logan had stayed at her condo with several of his friends while she was on vacation the weekend before she vanished. Police have had that information from the beginning.

"Absolutely they've looked at them. They've had multiple discussions with them. They will go through the same thing everyone else will go through," said Jennifer's father, Drew.

Channel 9 has also learned one of those friends left a cell phone at Jennifer’s condo and asked her to overnight it. The Monday night or Tuesday morning she disappeared, she may have left her condo looking for a roadside drop box to mail that cell phone. The package is missing and never made it to its destination.

"In the end, the detective believes he'll have a pretty good concept of what may have happened to Jennifer, but we don't know right now and we're gonna keep hope that we find her alive," said Barbara Jones, Orlando Police Department.

The best hope so far is a person of interest captured on a surveillance camera near where Jennifer's car was found. Channel 9 brought the images to expert Dominic Levasseur. He was able to enhance the contrast enough to guess that the person is likely wearing a hat, rather than having a unique hairstyle. He also said the clothing is probably light in color as police first thought.

At the search headquarters, volunteers were calling 1,200 volunteers from last weekend, hoping they'll return to help this weekend.

Family members said 400,000 flyers have gone out so far.

If you'd like to volunteer this weekend, go to the Mall at Millenia between 8:30am and 6:30pm Saturday or Sunday.