According to Greater Manchester Police, interviews were held with the now-17-year-old after his return from France.
After being looked after by the French authorities, Alex met his step-grandfather at Toulouse airport on Saturday before boarding a flight to the UK, the force added.
When he was eleven years old, he went on vacation. Last weekend, Fabien Accidini, a chiropractic student, discovered him near Toulouse, France, and he returned to the UK.
The teenager, from Oldham, trekked for four days and nights across the Pyrenees, a French prosecutor said, after spending years in France and Spain with his mother and his grandfather.
It has been suggested by French prosecutors that his mother Melanie Batty, who is not legally guarded, might be in Finland.
Antoine Leroy told reporters Alex said he knew his life with his mother “had to stop” after she said she intended to move to Finland.
In Oldham, his grandmother Susan Caruana is currently his legal guardian.
In a newspaper interview, the teenager said it felt “surreal” to be home and he still goes to sleep not expecting to wake up in England.
In 2017, at the age of 11, he embarked on a vacation with his grandfather David Batty, 59, and mother Melanie Batty, who is not legally recognized as his guardian.
He never returned and is said to have lived an “alternative” lifestyle abroad before deciding to return home.
Speaking to the Sun newspaper, the 17-year-old said he spent six years wandering around Europe with his mum and grandfather and first thought of leaving when he was 14.
He remarked, “It feels very strange to be back with my grandma.” “Every time I go to sleep, I have the impression that I will wake up in France. It’s not really kicked in yet that I am back in England.
“For the first few years, when I was in Spain, it was a vacation really, spending most days doing whatever I wanted, reading, drawing, going to the beach.”
When he started taking on odd jobs like construction, decorating, wall painting, and renovation, he said he “started to pick up slack” around the age of 14.
“I had a non-existent social life to be honest,” he said, adding he didn’t go to school and instead learned languages and studied maths and computing when he came across a textbook.
“And the entire six-year span, I made one friend and it was the only person really that I’d met for the entire six years that was even close to my age.”
