More By allowing ads to appear on this site, you support the local businesses who, in turn, support great journalism. Biedermann turns down offer to serve as Lathrop’s first ever police chief Biedermann Nobody knows at this point whether the City of Lathrop will meet its target of having a fully functional police force in place by June of 2022 when the current contract with the San Joaquin County Sheriff’s Office is set to expire. But if they do, they’ll be moving forward without the current head of Lathrop Police Services – a man that has spent more than half of his nearly 23-year in law enforcement working in the City of Lathrop.