Image caption Specialist police teams searched properties in the city

Six men have been charged with terrorism offences, including a suspected suicide bombing campaign, West Midlands Police have said.

Four of the men were charged with preparing for an act of terrorism in the UK, and two with failing to disclose information.

It follows a police operation in Birmingham last week.

The six, all from Birmingham and aged between 25 and 32, will appear at West London Magistrates' Court on Monday.

Irfan Nasser, 30, of Sparkhill, and Irfan Khalid, 26, of Balsall Heath, are accused of preparing for an act of terrorism, including travelling to Pakistan for training in terrorism, making a martyrdom video and planning a bombing campaign.

They are accused of "being concerned in constructing" a home-made explosive device for terrorist acts and stating an intention to be a suicide bomber.

Seventh man

Ashik Ali, 26, of Balsall Heath, is accused of preparing for an act of terrorism, which involved planning a bombing campaign, providing premises for the planning of terrorist attack and stating an intention to be a suicide bomber.

Rahin Ahmed, 25, of Moseley, is accused of helping fund terrorist acts.

Mohammed Rizwan, 32, of Ward End, and Bahader Ali, 28, of Sparkbrook, are both charged with failing to disclose information about potential acts of terrorism.

It is alleged that between 29 July and 19 September this year, both had information which they knew may help prevent the commission of an act of terrorism but did not disclose the information.

Mr Ali is also charged with providing money for the purposes of terrorism.

The offences are alleged to have taken place between Christmas Day 2010 and 19 September this year.

A seventh man from the city, aged 20, who was arrested on Thursday, continues to be questioned. Officers have until 29 September to charge, release or apply for further time.

The men were arrested as part of an operation carried out by the West Midlands Counter Terrorism Unit. The arrests were unarmed, pre-planned and intelligence-led.