The Lebanese Atomic Energy Commission received calls on Tuesday evening from Lebanon army's engineer regiment and Lebanese Environment Minister Tarek Al-Khatib that radioactive substance was found in one of the districts of Beirut close to the center, CNRS's statement read, as quoted by the NNA news agency.
A group of specialists, who inspected the site, concluded that it was Americium–Beryllium neutron source used for geophysical studies. The commission declared that the substance had no life-threatening effects.
The cylinder bore the inscription "USA. 7A Type a radioactive material."
It was contained in a capsule and did not poison the environment, the commission emphasized.
"Currently we do not have any information on the origin of this cylinder," said Lebanese Environment Minister Tarek Al-Khatib.
The country has more than 150 illegal dump sites where waste is burned, according to Human Rights Watch.