A pregnant 14-year-old girl was discovered beaten to death and buried under her boyfriend's house this week in Argentina, reports La Nación.

Chiara Páez told her 16-year-old boyfriend, Manuel, about her pregnancy. He reportedly confessed to killing her after learning of the pregnancy, according to police. Four relatives allegedly helped him dispose of Páez's body. Police have arrested Manuel.

According to the Femicide Observatory Group, Páez's case is one example of the rampant violence toward women in the country.

"Chiara Páez is a case of extreme savagery, but these figures are nationwide," Ada Rico, the head of the Femicide Observatory Group, told the Buenos Aires Herald. "In reading the annual report of femicides in particular, we were struck by the number. We're talking about very young victims and perpetrators."

Páez's death follows the April murder of Maria Eugenia Lancetti, a Cordoda kindergarten teacher, who was stabbed to death in front of her terrified students by her estranged husband.

The recent cases of violence against women have sparked protests in Argentina, as well as neighboring Chile and Uruguay, reports the BBC.

The Catholic Church, women's rights groups, unions and political parties have joined together to support the marches.

In Buenos Aires, protesters carried signs and wore badges proclaiming "Ni una menos" (Not one less), which is the tagline for the campaign. Other marchers wore shirts decorated with the photos of the domestic violence victims.

More than 200,000 people took part in the rally, according to Argentine news agency Telam.

Football star Lionel Messi expressed his support for the movement on Facebook: "Enough femicides. We join all Argentines today in shouting out loud 'not one woman less'."

Argentina's President Cristina Fernandez de Kirchner took to Twitter on Tuesday to condemn a "culture that devastates women."

While Argentina adopted a femicide law in 2012 with substantial penalties for domestic violence, campaigners say that authorities do not effectively enforce it.

Other Latin American countries have similar laws in their penal codes.