Massive explosion damages several homes, injures six people in Hayward, California. The explosion may have been caused by a damaged underground gas line, according to reports. #foxnews #news #us #fox #California #explosion Subscribe to Fox News: https://bit.ly/2vBUvAS Watch more Fox News Video: http://video.foxnews.com Watch Fox News Channel Live: http://www.foxnewsgo.com/ Download the Fox News app: https://foxnews.onelink.me/xLDS/cd5yhg3o Become a Fox News Patriot member! www.youtube.com/@