The Mexican public prosecutor's office on Thursday put forward two people who have been arrested as the alleged "material authors of the execution" of 24 men who were found last month in La Marquesa, a wooded area just outside Mexico City, reports dpa.
One of the suspects is a municipal police officer in the state of Mexico, while the other said he owned a security firm in the state of Mexico and also worked for a Sinaloa Cartel drug lord, Edgar Valdez Villareal, alias "Barbie."
The two men were arrested as they travelled in an armoured vehicle. They were armed, and had four radios and several mobile phones.
The authorities said the police officer helped the other man kidnap the 24 men, while it was the latter who actually perpetrated the killings.
According to the investigation, the 24 men were workers - some of them construction workers - with no known ties to drug trafficking.
Well over 3,000 people have been killed so far this year in Mexico in actions linked to organized crime.