Chicago police are investigating possible connections between the Tuesday slaying of a teen rapper, a raging Englewood gang conflict and a mocking Tweet on the account of the victim’s rap rival rising South Side star Chief Keef. Lupe Fiasco took to twitter to try to reach out to young rapper. Here is what he wrote:

Here is rapper Chief Keef's response:

This is really sad. Lupe Fiasco was trying to reach out to Chief Keef, Chicago gang violence is out of control. Chief Keef has the power to say something to get young people to chill out. This is a sad day for Hip Hop, Rap Music, Chicago, and black people in general.