Overview

• At Leeds Crown Court, prosecutors opened their case against Jordan Richardson, 21, over alleged preparation of a terrorist attack and support for Islamist extremism.
• Handwritten notes shown to the jury included violent instructions and a recipe for sulphur mustard that an expert assessed as a viable method to produce a chemical warfare agent.
• Police say a crossbow and a knife were recovered in a raid on Richardson’s home in Howden after concerns raised by social media activity.
• The prosecution cited social media posts that referenced Sheffield’s Meadowhall shopping centre and presented extremist content shared from accounts including one labeled Anglo Jihadi.
• Prosecutors said Richardson searched how to volunteer for Hamas and joked about a synagogue attack, while the defendant denies all charges and the trial continues.