A source just means someone came with a story. It could literally be anybody claiming to have knowledge. I could send an email to Complex Music right now and claim "i know XYZ happened that night but I'm not at the liberty of saying how". Then Complex could choose to report it or not report it. But if they choose to do so, technically they wouldn't be lying if they say "a source told us XYZ" happened. The thing is that normally, a serious media organization would vet the source and investigate before reporting hearsay from a source. But Complex are clowns. So they saw an opportunity to get in the mix and decided to go with the absurd story. The story they wrote claims the source came out because of the response the album has bern getting. So in less than 12 hours (roughly the timeframe at which the hype for the album started to build up) they had time to receive the info from the source, vet the source, fact check it the story, review it and publish it... They should be thrown in the bushes forever. And I'm not even saying she did or didn't get shot. The story is just ridiculous.