Tributes were pouring in across social media Thursday for music agent Dave Shapiro and drummer Daniel Williams, who were both believed to be involved in the deadly plane crash in a Murphy Canyon neighborhood.

A Cessna 550 crashed into a Murphy Canyon neighborhood just before 4 a.m. with an unknown number of people on board. Several home caught fire as an apparent result of the crash, leading to evacuations in the military housing neighborhood. Fire fighters are continuing to try to contain the blazes, with smoke visible from outside the neighborhood.