British police have prolonged the detention of all but one of two dozen suspects accused of plotting to explode multiple airplanes destined for the United States, authorities said Saturday. A British court Friday evening approved a request to keep 22 of the suspects in custody until Wednesday even though they have not been charged, and one suspect's hearing was adjourned until Monday. Another was released without charge, according to Scotland Yard officials.A police spokeswoman said the Terrorism Act of 2000 allowed authorities to detain the suspects for 28 days without charging them. The names and ages of 19 of the suspects have been released. All have Muslim names, and most are in their twenties and live in London. Intelligence officials have said that more than half of the suspects have family ties to Pakistan.