A neighbor and friend of Joseph Loudon, the Miramonte High School student who died Saturday night, has been arrested in connection with the party Loudon was attending.
Patrick Gabrielli, 18, of Orinda, has been arrested on charges of contributing to the delinquency of a minor and giving alcohol to a minor.
Police believe other students may be arrested pending their investigation.
Several Facebook groups have been created to honor Joe Loudon:
You can also post your condolences in a guest book the Contra Costa Times has set up online: