The Houses of Parliament were sealed off over a security alert in central London.
Eyewitnesses told GB News a bomb disposal squad was at the scene on College Green in the Palace of Westminster.
A remote-controlled bomb disposal vehicle was used to carry out a controlled explosion of the item, which was near the Knife Edge sculpture in the middle of the green.
GB News understands the suspicious package has been marked as safe with the unit leaving the scene.
Sky News reports the package contained Christmas cards with the name of Communities Minister Miatta Fahnbulleh MP on the box.
The area from Jewel Tower to Millbank House had been taped off while officers worked at the scene.
One eyewitness told The Telegraph: "It didn’t look particularly threatening and, once the robot had gone in, we were back on the green after about 45 minutes.
"We were told at first that we could go round the corner, but after a while we were asked to move further away."
The army's bomb disposal squad is at the scene
|GB NEWS
Ms Fahnbulleh, the MP for Peckham, was reportedly expecting a delivery of cards, but they never arrived.
Members of the public were allowed back to College Green at around 8.15am.
College Green is the area used by broadcasters to interview politicians on their way into Parliament.
The space is not enclosed and is often the site of protests during broadcasts and interviews.
The Knife Edge Two Piece 1962–65 sculpture is at the centre of College Green
|WIKICOMMONS
The green features the Knife Edge sculpture, formally titled "Knife Edge Two Piece 1962–65".
It is one of three sculptures of the same design by visual artist Henry Moore.
The other two are in Queen Elizabeth Park in Vancouver and in the garden at Kykuit, the house of the Rockefeller family in Tarrytown, New York.