Authorities in Mexico’s Sinaloa state said on Sunday that 14 people had been killed in the previous day as clashes between rival gangs raged in the wake of the arrest of a top drug cartel official.

Most of the killings were recorded in Culiacan, the capital of Sinaloa state, according to the prosecutor’s office, which has ordered an investigation into the case.

In recent months, clashes between criminal groups have escalated, forcing businesses and schools to close for security reasons.

An uncontrollable wave of violence erupted in the region after the arrest of Ismael “El Mayo” Sabada, co-founder – along with Joaquin “El Chapo” Guzmán, who is serving a life sentence in the US – of the Sinaloa drug cartel.

Mexico’s new president, Claudia Sheinbaum, has ordered the deployment of a strong military force in the state of Sinaloa to restore security and fight crime. However, conflicts continue.

Authorities said on Saturday that refrigerators containing human remains were found in parts of Sinaloa, noting that they bore insignia of war between rival gangs.

On Tuesday, in a shootout on the outskirts of Culiacan, 19 gang members were killed and a leading member of the local drug cartel was arrested.

The war raging between gangs in the state of Sinaloa has claimed the lives of at least 200 people, while more than 300 are missing, according to local authorities.