A owners of new Mexican restaurant in midtown will have to postpone its grand opening after an overnight fire damaged the roof.

An off-duty dispatcher for the Tucson Fire Department saw the smoke and flames coming from the roof of the building while driving to work and called it in, Capt. Barrett Baker, spokesman for the TFD, said in a news release.

Firefighters were dispatched at about 3:45 a.m. to Cancun’s at 6135 E. 22nd Street west of South Wilmot Road, and arrived within three minutes.

“The engine company pulled hose lines into the restaurant ... and performed a quick search to ensure no one was inside,” Baker said. “They reported smoky conditions, but no flames and reported that the fire was in the attic space above them.

“The ladder crew on scene cut multiple holes in the roof to access the flames. AC units and the duct work made it challenging to access certain parts of the roof to extinguish the flames,” Baker said.

It took nine units and 23 firefighters 17 minutes to bring the blaze under control.

The interior of the restaurant suffered smoke damage, but the majority of the fire damage was confined to the roof, Baker said.

TFD investigators were on scene. but the cause of the fire has not yet been released.

The restaurant had only been opened for a few weeks.

Check back with Starnet for updates.