A recent narcotics operation in San Francisco led to 87 arrests and the seizure of several pounds of drugs and a few guns, the San Francisco police, district attorney and other agencies announced Friday. In the other we conducted undercover stings that led to the arrests of multiple drug dealers,” San Francisco police Chief Derrik Lew said. Watch NBC Bay Area News free wherever you are WATCH HERE WATCH HERELew also described arrests last week by SFPD in Oakland at four different homes. These recent arrests come as the San Francisco Police Department continues saturation patrols in the Tenderloin and Mid-Market corridor. “And I want to send a message to everybody, and I want everybody to hear this clearly; if you come to San Francisco to deal drugs or commit crime, we're going to arrest you, we're going to prosecute you.”