RNA - “London attacks coming soon” was a caption reading on one of three posters by Daesh published on Twitter.
The poster depicted an attacker in front of a burning Big Ben, a tower viewed as the symbol of the British capital London, while it included words showing the terrorists will launch attacks on the city in the coming months.
Another poster showed a man clad in dash-style outfit brandishing a knife above New York city, calling to lone wolf terrorists to “fight them in your country”.
The Ash Shaff Media Foundation, which is close to Daesh, has created the two posters along another one which calls on followers not to forget the mission of the terrorist outfit.
A terrorism watchdog known as TRAC, which stands for Terror Research and Analysis Consortium, has published the posters on Twitter.
The threats come following a series of brutal explosions claimed by Daesh in Sri Lanka, where more than 250 people were killed while praying in churches earlier this month.
The attacks sparked fresh concerns about a resurgent Daesh, a group that once controlled territories in Iraq and Syria.
Daesh has still scores of Western nationals as fighters in its ranks. The terrorists joined the group mostly thanks to lax controls in European countries where people had been radicalized through internet and other means used by Daesh.
Governments have repeatedly expressed worry that a return of those nationals could pose serious security risks.