Three Palestinians have been killed in Gaza after attempting to dismantle unexploded Israeli shells found outside their home, relatives say.
The teenagers were going to sell the explosives, relatives said
One of the shells went off when it was taken into the house, destroying the basement of the house and killing the three teenagers.
Five other people were wounded in the explosion in Beit Lahiya.
Medics had previously said the deaths were caused when an Israeli artillery shell hit a house.
Israel had denied firing artillery at the time and suggested explosives at the house may have gone off prematurely.
In another incident, a farmer died when Israeli shells hit his fields near Jabaliya refugee camp.
Israel said it was responding to rocket fire.
The farmer, Omar Abu Warda, was working in his fields in northern Gaza when the shells struck.
An Israeli military spokeswoman said the army regretted any civilian casualties.
Israel frequently fires artillery at northern Gaza from where Palestinian militants fire homemade rockets at Israeli border towns.