Gunmen have stormed a drug rehabilitation centre in central Mexico, killing 24 people.
At least seven others were injured including three seriously in the attack on Wednesday, according to police.
It is the second attack at a rehab facility in Irapuato, Guanajuato, within a month, and one of the mostly deadly massacres this year.
The motive is unknown but gangs often target clinics where they believe members of rival factions are hiding.
The latest rehab centre to be hit was not officially registered, according to authorities.
