British authorities have charged a fourth person linked to last month's failed bomb attacks in London and Glasgow.

The anti-terrorism police Thursday 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.

The attack at the Glasgow airport building came hours after detectives in London discovered two cars packed with fuel, gas tanks and nails.

Some information for this report provided by AP and Reuters.