Apparently, he is an Egyptian immigrant. Muslim by birth.
It's also being reported that the two guys he killed, Hany Tawadros and Amgad Konds, were Coptic Christians.
Thanks. Since I’ve read on FR over the years that there are a lot of mozlems in MX and more than a handful of Mexicans converted to Islam; plus the working together in the drug trade, I wonder if there is some connection. Those kind of Gothic letter tattos (and it appears to be in English) suggest a Mexican connection with this perp. It would be interesting to know what the tat says.