• MARTINEZ, CALIFORNIA – AUGUST 4: Firefighters battle a vegetation fire...

    MARTINEZ, CALIFORNIA – AUGUST 4: Firefighters battle a vegetation fire near Pacheco Blvd. in Martinez, Calif., on Thursday, Aug. 4, 2022. (Jose Carlos Fajardo/Bay Area News Group)

  • MARTINEZ, CALIFORNIA – AUGUST 4: Firefighters battle a vegetation fire...

    MARTINEZ, CALIFORNIA – AUGUST 4: Firefighters battle a vegetation fire near Pacheco Blvd. in Martinez, Calif., on Thursday, Aug. 4, 2022. (Jose Carlos Fajardo/Bay Area News Group)

  • MARTINEZ, CALIFORNIA – AUGUST 4: A bulldozer works on creating...

    MARTINEZ, CALIFORNIA – AUGUST 4: A bulldozer works on creating a firebreak during a vegetation fire near Pacheco Blvd. in Martinez, Calif., on Thursday, Aug. 4, 2022. (Jose Carlos Fajardo/Bay Area News Group)

  • MARTINEZ, CALIFORNIA – AUGUST 4: Firefighters battle a vegetation fire...

    MARTINEZ, CALIFORNIA – AUGUST 4: Firefighters battle a vegetation fire near Pacheco Blvd. in Martinez, Calif., on Thursday, Aug. 4, 2022. (Jose Carlos Fajardo/Bay Area News Group)

  • MARTINEZ, CALIFORNIA – AUGUST 4: A helicopter drops water on...

    MARTINEZ, CALIFORNIA – AUGUST 4: A helicopter drops water on a vegetation fire near Pacheco Blvd. in Martinez, Calif., on Thursday, Aug. 4, 2022. (Jose Carlos Fajardo/Bay Area News Group)

  • MARTINEZ, CALIFORNIA – AUGUST 4: Firefighters battle a vegetation fire...

    MARTINEZ, CALIFORNIA – AUGUST 4: Firefighters battle a vegetation fire near Pacheco Blvd. in Martinez, Calif., on Thursday, Aug. 4, 2022. (Jose Carlos Fajardo/Bay Area News Group)

  • MARTINEZ, CALIFORNIA – AUGUST 4: A helicopter drops water on...

    MARTINEZ, CALIFORNIA – AUGUST 4: A helicopter drops water on a vegetation fire near Pacheco Blvd. in Martinez, Calif., on Thursday, Aug. 4, 2022. (Jose Carlos Fajardo/Bay Area News Group)

  • MARTINEZ, CALIFORNIA – AUGUST 4: Firefighters battle a vegetation fire...

    MARTINEZ, CALIFORNIA – AUGUST 4: Firefighters battle a vegetation fire near Pacheco Blvd. in Martinez, Calif., on Thursday, Aug. 4, 2022. (Jose Carlos Fajardo/Bay Area News Group)

  • MARTINEZ, CALIFORNIA – AUGUST 4: A tire catches fire during...

    MARTINEZ, CALIFORNIA – AUGUST 4: A tire catches fire during a vegetation fire near Pacheco Blvd. in Martinez, Calif., on Thursday, Aug. 4, 2022. (Jose Carlos Fajardo/Bay Area News Group)

  • MARTINEZ, CALIFORNIA – AUGUST 4: Firefighters battle a vegetation fire...

    MARTINEZ, CALIFORNIA – AUGUST 4: Firefighters battle a vegetation fire near Pacheco Blvd. in Martinez, Calif., on Thursday, Aug. 4, 2022. (Jose Carlos Fajardo/Bay Area News Group)

MARTINEZ — Firefighters managed to contain a three-alarm vegetation fire Thursday and protect vulnerable structures nearby, authorities said.

Firefighters with the Contra Costa County Fire Protection District responded to reports of the blaze shortly after 3:45 p.m. near the 4100 block of Pacheco Boulevard. They arrived aboard at least five engines to find flames spreading within nearby vegetation along a low hillside.

In social-media posts, ConFire said the Contra Costa Sheriff’s Office and Cal Fire were providing air support in battling flames, and Cal Fire estimated the fire size at 5 to 10 acres, based on first arriving units.

Although crews were working resources to protect threatened structures, there were no initial reports of injury or evacuations.

The fire, which investigators pegged as starting at or near a homeless encampment, was contained soon after 6 p.m. at a size of about 17 acres. Mop-up of hot spots and clearing of hoses and other equipment was expected to affect nearby traffic into Thursday evening.

Contact George Kelly at 408-859-5180.

Source: www.mercurynews.com