Tony Morgan, the trainer of middleweight contender Willie Monroe Jr., was arrested on Tuesday after allegedly selling methamphetamine to undercover detectives in Florida.

Morgan, 43, was charged with one count each of trafficking in meth over 28 grams, maintaining a vehicle for drug trafficking and possession of paraphernalia, according to DailyRidge.com.

The report says Morgan had agreed to bring 10 ounces but only had 4 ounces (worth $6,400) on him, which was packed in a plastic bag inside a disposable cup.

Morgan was training Monroe (19-1, 6 knockouts) for his May 16 bout with WBA middleweight titleholder Gennady Golovkin (32-0, 29 KOs) at The Forum in Inglewood, Calif., which will be televised by HBO.

Calls to Monroe’s number requesting comment were not answered. A spokesperson for Monroe’s promoter, Artie Pelullo of Banner Promotions, said the office had just been informed of the arrest and would issue a statement shortly.

Methamphetamine trafficking of 28 grams or more is a first-degree felony in the state of Florida punishable by a mandatory minimum term of imprisonment of seven years, plus a $100,000 fine, according to the state’s website.

Morgan had previously guided Andre Berto to the WBC welterweight title before the two split ties in 2013.