"I have a feeling it is her," said Le's brother Houng Le.
They said they are waiting on the official word from the coroner. An autopsy is being done on the body Monday.
The family said investigators told them the body not only matches their sister's description, the victim also had a jade bracelet and a watch similar to the one Phuong Le was last seen wearing.
"(We're) just wait for official confirmation," said Houng Le.
Le's family told police she left her Suisun City home at about 5 p.m. on April 25. She headed over to a Fairfield Barnes and Noble café to read some books and 8:30 p.m. is the last time anyone reported seeing her.
"It is a mystery what really happened with her," said neighbor Ben Reves.
When she didn't return home at midnight, her brother said he went to search for her. He said he spotted her unlocked car in the parking lot, with her belongings still inside. Friends and family organized search parties and posted flyers all over town.
"It is unfortunate. It is sad," said Fairfield resident Michele Herrmann
Investigators said they haven't named any suspects but the owner of a postal express business has been questioned after reports of a personal relationship with the missing woman.
On Saturday, KCRA stopped by the business to ask Thuc Ngygen if he heard about the discovery of a body.
"I can not believe it," said Nguyen, Le's former boss.
Ngygen asked the reporter to turn off our camera. He said he would leave up her missing person's flyer until he gets official confirmation from police.
Ribbons and flyers still surround Le's neighborhood on Saturday, the same day the family decided to call off a massive search for her. They said all they can do know is wait by the phone for investigators to confirm or deny their worst fears.
KCRA contributed to this report.