The Guatemalan police are investigating the murder of two girls aged six and 12 whose bodies were found dumped on a street in the capital, Guatemala City.
The girls, who were wearing nightwear, appeared to have been strangled, officials said.
Police are trying to establish whether their deaths are linked to the murders of two women found with gunshot wounds in the same district.
Some 700 women were killed in Guatemala in 2011, according to official figures.
The bodies of the two girls were found in the early hours of Wednesday on a street in Zona 11, a southern district of Guatemala City.
Two murdered women, thought to be aged between 20 and 35, were discovered in the same neighborhood. One had been shot in the face.
It is not clear whether they were victims of domestic violence or murdered by criminal gangs.
“Guatemala awoke in mourning,” women’s rights group Survivors’ Foundation said in a statement. “We demand these crimes be solved.”
