Hawzah News Agency (London, Britain) - A jury at Old Bailey ruled on Friday that Safaa Boular had been involved in a plot to attack the British Museum in Bloomsbury, central London, last year. The 18-year-old was also found guilty of attempting to travel to Syria to join Daesh(or ISIS).

Police said Boular, along her mother and sister and a family friend had formed a terror cell.

"All three women were filled with hate and toxic ideology and were determined to carry out a terrorist attack," said Dean Haydon, senior national coordinator for counter terrorism policing, adding, "Had they been successful, it could well have resulted in people being killed or seriously injured.”

Boular’s life sentence is with a minimum term of 13 years while her sister Rizlaine, 22, was jailed for life with a minimum term of 16 years at Old Bailey last month. The mother, Mina Dich, 44, received an extended sentence of 11 years and nine months.

The plot for attack on the British Museum was busted when undercover officers recorded phone calls between the Boular sisters and their mother. Rizlaine and Dich were also detected driving around central London in April 2017 in what police believe was a reconnaissance mission of likely targets.

Britain faces growing security threats from nationals who have fought along the ranks of Daesh in Iraq and Syria, where the group is almost obliterated, or others who still sympathize with terrorists. Some 23 people were killed in an attack last year on a concert in Manchester. Daesh claimed the attacks and said the perpetrator was a young troop.