Rocco Ritchie was found in possession of the drug in September, 2016 after police reportedly received a tip off about the 16-year-old's drug habit by his dad's concerned neighbours in London's posh Primrose Hill.
Officers swooped on the youngster and found a stash of cannabis in his backpack after conducting a body search.
The incident wasn't widely reported at the time, and reports suggest officials at Camden Borough's Youth Offending Team have been working on trying to rehabilitate Rocco and show him the error of his ways.
Read more: Guy Ritchie and Madonna’s bitter custody battle over 15-year-old Rocco heats up in London court
According to The Sun, he escaped a criminal record for the 28 September, 2016 offence, although a record of the legal run-in will be kept.
Now his pop superstar mother Madonna has broken her silence about the incident, which she has branded a "family matter".
"I love my son very much," she adds in a statement issued to The Associated Press. "I will do whatever I can to give him the support that he needs, and I ask that you respect our privacy at this time."
Read more: Guy Ritchie seeks Madonna custody battle support from dad activists
Filmmaker Guy has yet to comment on the matter.
Rocco has been primarily living with his dad in London after his parents put an end to their nearly year-long custody battle in September, 2016. The feud was sparked in December, 2015 after the teen refused to return to his mother's home in New York City following a winter break in the U.K. with his father.
The pot bust isn't Madonna and Guy's only concern - earlier this month, Rocco was also captured on camera acting up with his rowdy friends while riding on the London Underground.
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