Six Birmingham men are due to appear in court Monday on terrorism charges, three of them charged with plotting a suicide bombing campaign in the UK.

The men were arrested last week in Birmingham as part of a "major operation" by the West Midlands counterterrorism unit, the West Midlands police said.

Four of the men are charged with preparing for an act of terrorism, while two more have been charged with failing to disclose information,.

Irfan Nasser, 30, and Irfan Khalid, 26, from the Sparkhill and Sparkbrook areas are accused of preparing for an act of terrorism and of travelling to Pakistan for terrorism training -- including weapons, bombs and poison a martyrdom film, police said.

Ashik Ali, 26, of Balsall Heath is accused of raising money for terrorism, stating intention to be a suicide bomber and involvement in recruiting others for terrorist activity. A fourth man, Rahin Ahmed, 25, from Mosely, was charged with assisting others to travel to Pakistan for terrorism training, and investing and managing money for terrorist acts.

Two other men, Bahader Ali, who is the brother of fellow suspect Ashik Ali, and Mohammed Rizwan, aged 28 and 32 also from Sparkbrook, were charged with failing to disclose information.

It is alleged that between Christmas Day 2010 and last Monday, the six men were preparing, or helping others to prepare to commit acts of terrorism in the UK.

The charged men will appear in West London Magistrates Court Monday.

A seventh Birmingham man, aged 20, who was arrested on Thursday, is still being questioned by police. Officers have until Thursday to charge, release or apply for a further warrant of detention for the detained suspect.

The arrests took place from 11:30 a.m. on Sunday Sept. 18 across several areas across Birmingham, with the final suspect detained about 1 a.m. on Monday morning.