The incident happened in a residential house, where the plant was located, in the eastern part of the city of Gaza, which is the capital of the Gaza Strip.
"As a result of the accidental explosion in a residential house in the city of Gaza two Palestinians died, eight were injured," the press secretary said on Saturday.
The spokesman added that three people remained in a critical condition. Causes of the incident are unknown, the investigation is underway.
READ MORE: Palestinian Injured in Friday’s Clashes at Gaza-Israeli Border Dies at Hospital
The situation in the Gaza Strip has exacerbated over the last several months after a rally called the Great March of Return started on March 30. The rally has led to a spike of violence in the region.