. >> brian tumlin, owner of kitava restaurant, began to see a difference on mission street after the city began a crackdown on drug use and people selling items on sidewalks two miles away on sixth street. >> we've noticed an increase in drug dealing, use of hard drugs, folks blocking the entrance to our business. >> we caught up with sfpd assistant chief david lazar on sixth street. his team was leading people to a triage center to get help. >> we have open drug usage. we have drug sales, but we have people that need help. so we're here to help people, but also enforce the law. address crime. >> as the city ramps up efforts on this hotspot. also, two miles away from sixth street, residents in the castro are documenting the change on their street. this was taken friday at 11 a.m. >> they ran everybody off of sixth street and put them in, put a lot of them in jail because they were using drugs, open air in front of, you know, the public. >> so we asked, have you noticed that maybe some of the issues are spreading into other streets of the city? >> well, we noticed that as we start to

now, brian tumlin says he isn't 100% sure what's behind the growing issue, but others, including city supervisor, have suggested the crackdown in other neighborhoods may be pushing the proble into the mission. police told us they were reaching out to, but they were unable to accommodate an interview today. mayor daniel lurie told us he has some of the same concerns. mayor says his message is that anyone dealing drugs in san francisco, in any part of it, will be found and prosecuted. a police officer in sunnyvale who killed a man carrying a knife has now been cleared of criminal liability. the shooting happened last march at a mobile home park in sunnyvale. it all started when 19 year old emmanuel perez becerra called 911 on himself. he asked police to respond to a naked man walking outside with a knife. once at the scene, police learned the caller was becerra. investigators say officer kevin lemos shot becerra when he wouldn't drop the knife and started walking toward him. today, the da's office confirmed the actions of officer lemos were lawful. although he is not facing criminal pro

and brian tumlin says that wasn't the worst of it, telling us the problems escalate outside at night, selling illegal goods and selling and using hard drugs to the point where our staff has to walk over folks that are blocking the entrance when they come to and leave work at night. belen says it's hard to pinpoint a reason for the change, but would like to see something done to address it. it's taking it seriously and actually taking action. i think definitely the presence of more community officers and resources in the area that are very visible would definitely help. we've seen that it is a deterrent and it's something that can be positive if it's engaged with the community. the sfpd noted crackdowns in the tenderloin and soma neighborhood have yielded good results. but now some are asking if those crackdowns push the problem ininto the mission. that includes supervisor jackie fielder, who posted online that the war on drugs on san francisco's tenderloin and soma the past few years is just displacing problems into the mission. police told us they were unavailable to comment on the i

and brian tumlin says that wasn't the worst of it, telling us the problems escalate outside at night, selling illegal goods and selling and using hard drugs to the point where our staff has to walk over folks that are blocking the entrance when they come to and leave work at night. belen says it's hard to pinpoint a reason for the change, but would like to see something done