The reward for information about a woman missing from Dakota Count since July has increased, according to the Dakota County sheriff's office.

Officers continue to investigate the disappearance of 56-year-old Nicole "Niki" Anderson, who left on foot from her Randolph Township home the morning of July 6, and has yet to return.

Anderson's family reported that she'd left her home that morning to check the mail, which was the last they'd heard from her.

Investigators searched her home and surrounding property using drones, canines and helicopters, according to a sheriff's office statement. They also searched the residence where her 42-year-old ex-boyfriend stayed in Randolph, two miles from her own property.

Anderson's family shared that she is a cancer survivor.

The previous reward of $5,000 for information leading to Anderson's whereabouts or the prosecution of those involved is now $45,000, according to a press release. Private parties contributed the additional $40,000.

Only tips received through the Dakota County sheriff's office or Crime Stoppers that help lead to the location of Nicole Anderson or prosecution of those involved in her disappearance are eligible for the reward.

Anderson was last seen wearing dark-colored pants, sandals and a long, gray sweater/shirt. She is 5 feet, 10 inches tall and weighs 135 pounds, according to the sheriff's office.