Two UK bomb suspects released

LONDON, England (CNN) -- Two men arrested in Britain's probe of the attempted terrorist attacks in late June have been released, Metropolitan Police said Sunday.

The two men, ages 28 and 25, were arrested early July 2 by Strathclyde Police at the "residences of the Royal Alexandra Hospital in Paisley," police said in a news release.

Four men remain in custody in connection with the failed bombings June 29 in central London and June 30 at the Glasgow airport in Scotland. A fifth man -- charged in Australia -- was released on bail on Monday.

Three of the five remaining suspects have been charged -- two in Britain and one in Australia.

On Sunday, a British magistrate issued a warrant allowing police to extend the detention of one of the suspects -- Dr. Mohammed Asha -- to July 21.

Asha, 26, was arrested the night of June 30 on Britain's M6 highway in Cheshire. He has not been charged. Asha is a medical doctor of Palestinian descent who grew up in Jordan; his wife, who was traveling with him when he was arrested, was later released.

The second man who is detained but not charged is Kefeel Ahmed, who is under armed guard in a Glasgow-area hospital with burns over his entire body from the airport blast.

Authorities believe that two men who parked two cars packed with explosives in London June 29 traveled six hours to Glasgow to carry out a suicide mission the next day.

The three men who have been charged in the case include:

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