Earlier this month, Alex was discovered in a mountainous area of southern France after a delivery driver spotted him walking alone in the rain with a flashlight.
According to the Associated Press, the teenager told French investigators he spent the past few years traveling with his mother and grandfather as part of a “spiritual community” and decided go out on his own after his mom told him they were moving to Finland.
As for what made Alex follow through with his plans? He told The Sun he got into “a stupid argument” with his mom.
“I just had enough and thought, ‘That’s it, I’m leaving,'” he explained. “I wrote a note and said, ‘Hey, Mom. I want you to know I love you very much. I’m very thankful for the life that you provided for me over the past few years.'”
His note continued, “‘Don’t worry about yourself. I’m sure you won’t get found. Don’t worry about me either. You know I can look after myself. I love you very much. Don’t be angry with me. Love Alex.'”
At this time, Alex’s mother and grandfather are wanted in connection with his disappearance, NBC News reported Dec. 14.
E! News has also reached out to Greater Manchester Police for additional updates and has not heard back.