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BOULDER, Colo. — The Latest on wildfire burning near Boulder, Colorado (all times local):

6:20 p.m.

Firefighters have contained a wildfire that forced hundreds of people from their homes in the foothills near Boulder, Colorado.

The Boulder Office of Emergency Management says the 70-acre fire was 100 percent contained Monday afternoon, and firefighters are expected to work overnight mopping up hotspots and flare-ups.

The fire started Sunday in a wooded, mountainous area a couple of miles from Pearl Street, the shopping and dining hub in the heart of the university city. Officials ruled out any lightning strikes or downed power lines and are looking at whether the fire was sparked by transient campers.

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1:50 p.m.

Hundreds of residents have been allowed to return to their homes in the foothills near Boulder, Colorado, as firefighters make progress against a wildfire possibly sparked by transient campers in the area.

The fire was burning on about 70 acres just west of downtown and is nearly fully contained. Boulder County Sheriff's Cmdr. Mike Wagner says investigators are working to pinpoint where the fire started.

It broke out Sunday in a wooded, mountainous place a couple of miles from Pearl Street, the shopping and dining hub in the heart of the university city. Officials ruled out any lightning strikes or downed power lines.

Another wildfire in the county was accidentally started last year by two men camping in the mountains who didn't fully put out their campfire. It destroyed eight homes.

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10:25 a.m.

Hundreds of residents have been allowed to return to their homes in the foothills near Boulder, Colorado, as firefighters make progress against a wildfire possibly sparked by transient campers in the area.

The fire was burning on about 70 acres just west of downtown and is about 50 percent contained. Boulder County Sheriff's Cmdr. Mike Wagner says investigators are working to pinpoint where the fire started.

It broke out Sunday in a wooded, mountainous place a couple of miles from Pearl Street, the shopping and dining hub in the heart of the university city. Officials ruled out any lightning strikes or downed power lines.

Another wildfire in the county was accidentally started last year by two men camping in the mountains who didn't fully put out their campfire. It destroyed eight homes.