The teenager accused of stabbing three girls to death at a UK dance class was making ricin and had al Qaeda training credentials, police said.

The teenager is accused of stabbing that killed three girls Taylor Swift’s dance class in England has been charged with producing the deadly poison ricin and is now facing a charge of threatening to possess a jihadi training manual, police said Tuesday.

Axel Rudakubana, 18, who is the case of killing three girls again stabbing 10 other people In July, he produced the deadly ricin poison that was later found at his home, Merseyside police said. Police also found that he had a computer file containing an Al-Qaida training manual titled: “Military Studies in the Jihad Against the Tyrants: The Al-Qaeda Training Manual.”

New charges have been brought against Rudakubana for allegedly producing the biological poison, ricin, which violates the law that prohibits biological weapons in the UK, and “having information, which is a pdf file … of a type that may be useful to a person who commits or prepares an act of terrorism,” the police said. The latter offense is prohibited under the terms of UK terrorism legislation.

Ricin is found in the castor bean plant and is one of the world’s deadliest toxins. It has no known vaccine or cure and kills cells by preventing them from making proteins.

Police stressed that the July attack has not yet been treated as a “terrorist incident,” which would require a motive to be determined.

Rudakubana, who police say was born in Wales, was already facing three counts of murder in the July deaths of Alice Dasilva Aguiar, 9, Elsie Dot Stancombe, 7, and Bebe King, 6, in the seaside town of Southport in northwest England.

He was also charged with 10 counts of attempted murder of eight children and injured two adults.

The stabbing was used by activists fighting for the right to remove anger against immigrants and Muslims after the spread of false news on social media indicating that he is an asylum seeker and misrepresenting his name.

The violence spread from Southport and led to a week-long uprising in England and Northern Ireland.

In a statement on Tuesday, Chief Constable Serena Kennedy urged the public not to engage in speculation about the case.

“Don’t believe everything you read on social media,” said Kennedy. “We must not forget the families of Elsie, Bebe and Alice, who are still grieving, and the families of those children and adults who were injured and affected by what happened that day. We all need to do the right thing. to ensure that the judicial process is not discriminatory.”