Heavy smoke billows into the sky after a house caught on fire in the 4000 block of West Sussex Drive in McHenry Sunday afternoon. | Photo Submitted to Lake and McHenry County Scanner

An investigation is underway after a fire heavily damaged the rear and attic of a house in McHenry, sending black smoke billowing into the sky Sunday afternoon.

The McHenry Township Fire Protection District responded around 1:26 p.m. Sunday to the 4000 block of West Sussex Drive in McHenry for a report of a structure fire.

McHenry Township Fire Protection District Acting Battalion Chief Ryan Mastandrea said crews arrived within four minutes to find an active fire in a one-story residence.

Heavy flames were coming from the rear of the home and the fire significantly spread into the attic.

Everyone inside the residence had exited the structure prior to the fire department’s arrival, Mastandrea said.

Firefighters performed an aggressive fire attack while simultaneously searching the residence.

The fire was declared under control within 20 minutes, Mastandrea said.

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The Mutual Aid Box Alarm System (MABAS) was activated to the box alarm level for change of quarter companies and investigators.

No residents or firefighters were injured in the blaze. The residence was deemed uninhabitable.

Mastandrea said the cause of the fire is currently under investigation and a damage estimate was not immediately available.

The Crystal Lake, Cary, Round Lake, Lake Villa, Spring Grove and Wauconda fire departments assisted.