Crews from three different fire departments battled a large brush fire on the north side of the Joe Fulton International Trade Corridor last week.

Chief Richard Hooks of the Corpus Christi Fire Department said a call was received at about 11:45 a.m. that reported a large fire out on a vacant stretch of property belonging to the Port of Corpus Christi.

Emergency crews were dispatched and arrived on the scene within minutes of the call, but had a hard time discerning what exactly was burning since a large column of black smoke was coming from the field, Hooks said. Grass fires tend to have a lighter, nearly gray shade of smoke when they burn, he added.

"We're still trying to find out if there was any oily substances underneath the grass," Hooks said last week.

Since there were no fire hydrants near the blaze, which scorched nearly 100 acres, fire crews from the Annaville Fire Department and Refinery Terminal Fire Co., as well as the CCFD, had to use tankers to transport water to the scene.

Smoke from the blaze could be seen for miles and curious onlookers drove toward the fire to see what was happening.

"I could see it all the way from (Sam's Club) on Greenwood," said Sem Esquivel, a resident of Corpus Christi.

The cause of the fire is still under investigation, but Hooks said a group doing some mowing may have created a spark that ignited the blaze. It took fire crews nearly two hours to contain the fire.