Without probable cause, the evidence obtained after the arrest would be suppressed. The law may allow you to throw out any evidence gathered in an unlawful search.We send all cases in which probable cause has led to the arrest of a person to the District Attorney. Find arrest records in Contra Costa County. OUTRIGHT RELEASE: Officers may also release the suspect without having him sign a notice to appear if they are satisfied that probable cause does not exist. When someone faces felony charges in Contra Costa County, the legal process begins with an arrest. This can happen based on probable cause or an arrest warrant. After the defendant has been served with the papers, the person who served the paper MUST complete the Proof of Personal Service (CH200). We'll evaluate the following: The circumstances leading up to your arrest. The circumstances leading up to your arrest.