The burglar alarm went off when they threw a chair through a sliding glass door. This scared them off and they left without entering the house, reports tmz.com.
The police is still on a hunt for the intruders.
The singer has faced similar incidents earlier as well.
A stalker tried to break into her house earlier in February as well, and in June too, a man was spotted creeping on her roof.
Rihanna is currently busy performing in Australia.
--IANS (Posted on 03-10-2013)