Mexicans are set to march for peace on Sunday after the Sinaloa Cartel showed its gun power last Thursday in a battle in daylight against state security forces during a military operation to capture El Chapo’s son.

Ovidio Guzman Lopez, aka El Raton (The Mouse), is a Mexican drug lord and former leader of the Sinaloa Cartel, who is currently serving a life sentence.

Read more: Mexicans to march for peace after drug related clashes