A mother of 4 children were killed by a group that included her brother.
Palestinian gunmen said they shot dead a man and a woman accused of collaborating with Israel in the West Bank on Tuesday.
Abu Ala, a local commander of the Al Aqsa Martyrs' Brigades in Nablus, said the two were killed in separate shootings in the city.
Gunmen killed Jafal Abu Tzrur, 24, in a refugee camp and the woman, 27, outside a hospital. Abu Ala said the two were lovers.
"We carried out the death penalty after we were sure they were both collaborators with Israeli military intelligence," Abu Ala told Reuters.
He said the couple passed on information that enabled Israel Defense Forces soldiers to kill three Al Aqsa militants in the Balata refugee camp in March.
The gunmen said Tuesday that they handed the woman, a mother of four, to her family. They said she was killed by a group that included her brother on grounds that she shamed her clan.