Mexico City: Four members of a family were gunned down over the weekend outside the Mexican Pacific resort city of Acapulco by unidentified individuals, media reports said.
A man shot twice in the chest is listed in serious condition following Sunday`s shooting, the Novedades de Acapulco newspaper reported.
One of the dead is a 34-year-old woman who was six months` pregnant, the daily said, adding that the motive for the killings has not been determined.
The murders occurred in Ampliacion Lazaro Cardenas, a neighbourhood on the outskirts of Acapulco.
The Citizens Council for Public Safety and Criminal Justice said in a report issued in February that Acapulco was the world`s second most violent city, with 142 homicides per 100,000 residents, trailing only San Pedro Sula, Honduras.
Acapulco, one of Mexico`s most famous tourist destinations, has been plagued by drug-related violence in recent years.