Mexico asks FBI to help probe killing of Americans

Mexico on Sunday invited the FBI to participate in the investigation of an attack in its north that killed nine dual citizens of the United States and Mexico.

source https://www.reuters.com/article/us-mexico-violence-usa/mexico-asks-fbi-to-help-probe-killing-of-americans-idUSKBN1XK0MQ?feedType=RSS&feedName=worldNews