Mexico City, Oct 7 (EFE) Assailants armed with assault rifles burst into a hospital in the northern Mexican state of Durango and killed three men being treated for gunshot wounds, the state attorney general’s office said.

Wounded Saturday on the streets of Villa Union, the three men received initial treatment on the scene from the Red Cross and were then taken to the hospital.

Their attackers followed them to the hospital and finished them off there, the AG office said Tuesday, adding that no hospital employees were hurt in the incident.

The use of assault rifles indicates the killings were related to organised crime.

Late Monday, Mexico’s defence department announced the arrest of a killer-for-hire accused in 30 murders and 14 kidnappings.

Eduar Vera Arias, 30, a native of the southern state of Chiapas, was detained by army soldiers near the northern border city of Ciudad Juarez, the department said in a statement.

Vera admitted to having killed 30 people on the orders of the Juarez drug cartel, authorities said.