(CNBC) - The former personal assistant to Goldman Sachs co-president David Solomon fled to Rome in November 2016, one day after privately admitting he took $1.2 million worth of rare wine from the executive's collection.

A federal court judge in Los Angeles on Wednesday denied Nicolas De-Meyer bail and called him a flight risk. De-Meyer, who had worked for Solomon from 2008 to 2016, had admitted to his boss he took the wine during a meeting with him and his wife at a Manhattan hotel that November, the day before he fled the U.S.

He traveled in Italy, Brazil, Argentina, Switzerland and Morocco and was issued a 10-year visa in Brazil in 2016, according to FBI agent Elizabeth Rivas, who testified on Wednesday about De-Meyer's arrest at Los Angeles International Airport on Tuesday night. The FBI tracked his movements using bank records and ATM withdrawals, she said.