Serra Mesa June 21, 2023 11:08 am Serra Mesa's home leads to criminal investigation A criminal investigation is underway after a small explosion occurred at a home in Serra Mesa. US & World Videos 0:29 UC San Diego students walk through campus with Palestinian flag 2:16 San Diego will convert some golf course land, campsites to wetlands in Mission Bay 4:12 Migrants face challenges after closure of San Diego County's migrant center 4:25 NBC 7 Responds helps woman get late father's car back 2:43 San Diego leaders discuss new rules for city gun purchases for law enforcement