Fire officials estimate some thousands of railroad ties caught on fire, sparked by an ember from brush burning nearby.

The Camp House fire has burned nearly 12,000 acres, while the Jenkins Creek fire has burned at least 6,800 acres. Both fires are at 0% containment as of Tuesday morning.

Monday night closed out day three of a large brush fire in the Jim Thorpe area. Officials say it broke ... Officials say the fire's been burning on Bear Mountain since Saturday.

Residents in the area are being asked to evacuate ... downgrading the estimate to about 100 acres. On Thursday night, the estimated number of acres burning expanded to 750 acres.