Story highlights Brazilian police say Ryan Lochte charged with falsely reporting a crime

A teammate has already had to pay a five-figure fine to settle his legal trouble

Rio de Janeiro (CNN) US swimmer Ryan Lochte has been charged with falsely reporting a crime, Rio police said Thursday.

The department's chief has requested a letter be sent to Lochte explaining the legal process related to the charges, according to a statement.

The 12-time Olympic medalist will now be summoned to Rio, according to Tourist Support Special Precinct officials.

JUST WATCHED Americans say 'Sorry about Lochte' before leaving Rio Replay More Videos ... MUST WATCH Americans say 'Sorry about Lochte' before leaving Rio 02:01

Lochte can opt to send a lawyer and does not need to appear in court.

If convicted, Lochte, 32, could face between one to six months in jail, although the judge could choose to levy a fine instead. There would be no negotiations in that case, Clemente Braune, a commissioner with the Special Tourist Police in Rio, said Thursday.

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