Four men have been arrested in connection with last Thursday's London Tube attacks, the Sky news reported on Wednesday.

One of the men is thought to have been member of the gang behind the failed bombings on the city's bus and underground stations on July 21.

He has been taken to London's high-security Paddington Green police station and the area around the scene of the raid, the Hay Mills area of Birmingham, was evacuated while a suspect package was detonated.

All the men were held by armed police in two separate raids across Birmingham in central England.

The man taken to Paddington Green was hit with a Taser gun during the arrest but no gunshots were fired during the swoop, carried out jointly by West Midland and Metropolitan police.

Shortly afterwards, the officers carried out a second raid on a location in the Washwood Heath area.

Three men were arrested, again under the Terrorism Act 2000, and are being held in the West Midlands area in central UK.

Forensic examinations are being carried out at both localities.

On Tuesday night, two more men were arrested in the Grantham area of Lincolnshire while traveling on a train from Newcastle to London.

The arrests were made as Scotland Yard Police chief Ian Blair vowed to catch those behind last week's planned attacks on London.

He also disclosed that there had been 250 bomb scares in the capital since the fatal blasts of July 7.

Source: Xinhua