(Portland, OR) -- No injuries are reported following an arson at an apartment in North Portland. Firefighters responded to an apartment complex on North Trumball Avenue early yesterday morning. They found fire in one apartment, with flames on the backside of the unit. Firefighters were able to stop the fire in about 20 minutes. Following an investigation, one person was arrested for arson, criminal mischief and reckless endangerment. The cause of the fire hasn't been released.