RIO DE JANEIRO (Reuters) - Brazilian authorities said on Monday that soccer star Neymar was fined 16 million reais ($3.33 million) for breaching environmental rules during the construction of his coastal mansion in southeastern Brazil.

The luxury project violated rules regarding the use and movement of freshwater sources, rock and sand, local authorities first alleged late last month and confirmed on Monday.

A spokesperson for Neymar declined to comment on the matter.

His residence is located in the town of Mangaratiba on the southern coast of Brazil's Rio de Janeiro state.

Mangaratiba's environmental body said in a statement on Monday that environmental infractions were made "in the construction of an artificial lake at the mansion."

Besides the fine, the case will be probed by the local attorney general's office, the state civil police and environmental protection office, among other environmental control bodies.

($1 = 4.8074 reais)

(Reporting by Rodrigo Viga Gaier; Writing by Carolina Pulice; Editing by Sonali Paul)