A fire broke out at Honolulu's Sand Island wastewater treatment plant, sending thick black smoke into the air, but firefighters got it under control within minutes.

• A 3-alarm fire started in mechanical equipment outside one of the buildings at the facility.
• Firefighters responded fast, putting water on the fire shortly after an 8 a.m. call and having it under control within minutes.
• The fire broke out at the bio-solids processing facility, which is run by a contractor for the city.
• No word on injuries or how much damage the equipment fire caused.

Outlook: Cleanup and an investigation into the cause are likely next, with normal plant operations expected to resume once the area is cleared.