The 90-year-old said her husband had kept the item on display at home since 1943, but it caused a frenzy when police discovered it was a live explosive.
One man was arrested Tuesday afternoon after an apparent explosive device detonated outside the embassy compound.
The plant is the oldest of the seven water treatment facilities and serves about 1 million people.
The U.S. has alleged that the Syrian Scientific Studies and Research Centre was developing sarin gas.
The U.S. government was not involved in any way with a Saturday drone explosion at a Venezuelan military event, according to President Donald Trump's national security advisor.
A hydrovolcanic explosion could have caused the explosion that hit a tour boat in Hawaii.
"During production and manufacture of the gun, this hazard was not adequately considered or investigated."
Preliminary reports included photos and videos of what appeared to be a massive explosion near Cairo International Airport in Egypt.
"You need to stop doing this," Ethiopia's new PM tells attackers. You weren't successful in the past and you won't be successful in the future."
"The government of the Bolivarian Republic of Venezuela, led by President Nicolas Maduro, deplore this unfortunate event. We send our condolence to the families."
"There are injured, burned and dead people."