According to BFM TV, the Roland Garros sports complex in Paris, home to the French Open tennis tournament, was targeted by robbers.
The incident occurred late on Thursday night. Unknown assailants climbed over the fence and broke into several offices on the premises.
The thieves made off with €11,000 in cash and jewelry worth €20,000. Authorities have yet to identify the culprits, and police are conducting an investigation.
Earlier, it was reported that Rafael Nadal would finish the season without a victory in Grand Slam matches for the first time since 2002.