London commuters, Tower Bridge in background
London commuters, Tower Bridge in background Reuters

London police have arrested a female suspected terrorist, the seventh in a sting operation carried out last week.

The 22-year-old woman was taken into custody on Saturday morning on suspicion of committing, preparing or instigating terrorism.

Five men and another woman ages 18 to 30 were picked up in London last Thursday on similar charges, according to CNN. None of the nationalities or ethnic identities of the suspects were released.

Among those arrested was a man who had worked as an auxiliary police officer from 2007 to 2009. In a statement, the force said he had worked as a police community support officer for the Met Police, and 'was not deployed in a specialist or sensitive role.”

The international Olympics are scheduled to start in London in three weeks, adding to the security concerns of the city. Additional security measures are expected to be in place for the series of events, which draw both competitors and spectators from all over the world, including Israel and other Middle Eastern nations.

The UK Home Office website currently lists the country's terror threat level at “substantial,” a mid-range of five levels. The next level is “severe,” indicating an attack is “highly likely.” The highest level is “critical,” meaning a terror attack is “expected imminently,” according to the website.