British police have announced the arrest of two men on suspicion of terrorism.
Authorities say an Afghan man was detained on Wednesday in the southwestern England city of Bristol, initially on drug-related charges. During a search of the man's apartment, police found an undisclosed substance they believed might be linked to terrorism. Police said that discovery led to the arrest of a second man.
On Thursday, British authorities charged a fourth person linked to last month's failed bomb attacks in London and Glasgow. Anti-terrorism police charged Jordanian doctor Mohammed Jamil Asha with conspiring to "cause explosions." Asha is due to appear in a London court on Friday.
Asha is one of eight people arrested in the aftermath of the attempted car bombings in London and Glasgow.
British police earlier charged Iraqi-trained doctor Bilal Abdullah with conspiring to cause explosions. Indian engineer Kafeel Ahmed is being treated for critical burns he sustained after driving a jeep into the Glasgow airport June 30.
Britain also charged Ahmed's brother, Sabeel, last week with failing to disclose information that could have prevented a terrorist act.
Australian authorities have charged Sabeel's relative Mohammed Haneef in connection with the case. And three suspects, including Asha's wife Marwa, were released without charges.
Some information for this report was provided by AFP and AP.