By Tim FangAuthorities in the East Bay detained several suspects on Monday following a jewelry store robbery in which police said nearly 20 people were involved. Around 1:50 p.m., San Ramon Police officers were called to Heller Jewelers at 6000 Bollinger Canyon Road, inside the City Center Bishop Ranch center, on reports of a takeover-style robbery. Approximately 20 masked suspects entered the store, smashing display cases and taking numerous items. Following the incident, San Ramon police pursued some of the vehicles believed to be involved, but the pursuit was terminated amid safety concerns. Police said air support tracked the suspects into Alameda County, where several suspects were detained at two locations in Oakland and a location in Dublin.