LONDON - A woman who was arrested by police investigating the botched London and Glasgow terrorist attacks was released without charge on Thursday, police said.

Marwa Asha, 27, was arrested with her husband, Dr. Mohammed Asha, 26, of Newcastle-under-Lyme on the M6 highway in Cheshire on June 30.

A brief Scotland Yard statement said she was released without charge Thursday evening, and a spokesman declined to provide any other information about her case.

Eight suspects were detained after police found two unexploded car bombs in central London on June 29 and two men crashed a Jeep Cherokee loaded with gas canisters and gasoline into the Glasgow airport the next day.

Marwa Asha had been the only woman detained.

The other suspects who remain in custody or under police guard include Kafeel Ahmed, a 28-year-old Indian engineer who is in a Scottish hospital with critical burns after allegedly ramming the Jeep into the airport.

His alleged accomplice in the Jeep, Bilal Abdullah, is a 27-year-old doctor born in Britain and raised in Iraq.

They are alleged to have carried out the attempted bombings in London before returning to Scotland -- where Abdullah worked -- and attacking the airport.

Kafeel Ahmed's brother, Sabeel Ahmed, 26, a doctor, was arrested in Liverpool and is being questioned by police. A third Indian, Muhammad Haneef, was arrested in Australia on July 2 as he was boarding a flight to India. He is a distant cousin of the Ahmed brothers.

Two other suspects being questioned in London are unidentified trainee doctors, aged 25 and 28, who were arrested at the Royal Alexandra Hospital, Paisley.