The fire near the Michael Emery Trailhead in the Albuquerque foothills is 50 percent contained and has burned 56 acres.Crews were able to gain ground while working overnight. Fire officials tell KOAT they don't believe the fire started from natural causes. "We've ruled out natural causes because there's no lighting in the area, but that's as far as we've gone into any investigation or cause," said Lt. Brian Fox with Albuquerque Fire Rescue's Wildland Division. There were a few flareups overnight, but it was inside the fire lines.Roughly 50 firefighters are on the ground, trying to gain an upper hand with the fire."Building off the fire lines we constructed yesterday and hitting hot spots and the forest service is bringing out their helicopter out of Sandia to work it with bucket work as well," said Fox. There are roughly half a dozen engine crews, one hand crew and one helicopter on hand.But winds could affect the use of the helicopter."The wind is not in our favor you know. It’s coming down the canyon right now and it’s blowing at a pretty stiff rate," said Kirby.Albuquerque Fire Rescue is planning to bring extra resources to help.Wednesday morning several people used the Michael Emery trailhead. Many people saying they didn't even know there was a fire until they saw the burn scares. "It looks like it came in at tail end," said Doug Milroy, who was hiking. "I didn't even see any smoke. It looks like it was well under control." Firefighters are asking hikers and mountain bikers to please avoid the area for safety reasons."We ask for people to stay out of the area. We know a lot of people want to come up and look at things, but it causes a hazard to us and the working environment. At some point it may delay our work," said Fox.Crews will be on scene until the fire is 100 percent contained and completely extinguished.The cause is under investigation.No homes have been damaged and no injuries have been reported.