Los Angeles police responded to a burglary call at Rihanna‘s Hollywood Hills mansion Tuesday night.

The call came in at about 9:30 p.m.

It appeared that an alarm was sounding and lights were flashing as officers checked the home. Police said they were notified the incident was taking place because of the home’s alarm and surveillance system.

Police have not said how many suspects may have been involved but have confirmed that property was stolen from the residence when no one was home. They also said a vehicle was involved but no description was immediately available. A search for the suspect or suspects is underway.

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This is the second time that Rihanna was the victim of a burglary. Earlier this year, the same house was burglarized in May when an alleged stalker was arrested after police say he broke in and spent about 12 hours inside the house before he was discovered the next day by Rihanna’s assistant.

Rihanna’s representatives declined to comment on the incident, but she has been notified and is aware of the events.