The Argentine human rights activist Rosa Roisinblit has died at the age of 106, her organisation says.

She was honorary president and a founding member of the Grandmothers of Plaza de Mayo, a group that searched for children stolen during Argentina's military dictatorship between 1976 and 1983.

We only have words of gratitude for her dedication... and the love with which she searched for the grandsons and granddaughters until the very end, the campaign group said in a statement.

Some 30,000 people were killed or forcibly disappeared during Argentina's Dirty War. Children of detained opposition activists were seized and given up for adoption.

Rosa Roisinblit was born in 1919 in Moises Ville, a town of Jewish immigrants in central Argentina.

She worked as an obstetrician and moved to Buenos Aires in 1949, where she married in 1951.

After the military coup of March 1976, the junta moved to eradicate the opposition. Tens of thousands of activists were snatched in raids and held in clandestine detention and torture centres.

Many were thrown into the sea on notorious death flights. An estimated 500 of their babies were stolen.

Roisinblit's pregnant daughter Patricia, son-in-law José Pérez Rojo and 15-month old granddaughter Mariana, were kidnapped in 1978. The couple had been left-wing activists.

After her family's abduction, Roisinblit joined the Grandmothers of Plaza de Mayo and served as treasurer for six years before working as vice-president from 1989 to 2022.

An estimated 140 babies have been reunited with their biological parents through the work of organisations like Grandmothers of Plaza de Mayo. Hundreds are still missing.

Rosa Roisinblit is also survived by granddaughter Mariana Eva Perez, a writer, playwright and academic.