South Africa police on Monday arrested four suspects after two women, including a 90-year-old pensioner, were killed.

Authorities said five men, aged between 24 and 46, broke into a house through a window at Gogobole village near Louis Trichardt on Sunday night and opened fire at the elderly woman and her 60-year-old daughter.

One family member escaped unhurt and nothing was taken from their house.

Police spokesperson Brigadier Motlafela Mojapelo said the motive of the attack was not known.

“The deceased were identified as Matamela Ramala and her daughter Martha Ramala. The motive behind this incident is currently not known and will be determined by the unfolding investigations. The suspects will appear in Tshilwavhusikhu Magistrates Court on Wednesday facing two counts murder,” Mojapelo said.

The incident followed several protests taking place against attacks on women in the country.