A woman among five people accused of plotting to attack Bahrain's Formula One race was allegedly given six explosive devices days before she was arrested, a report said.

The 37-year-old was stopped, along with another female suspect, at a police checkpoint as they drove to the Bahrain International Circuit (BIC) on April 21, said a report in the Gulf Daily News (GDN), our sister publication.

Officers reportedly found a pillow stuffed under the clothing of the other woman, 29, who allegedly told police she was planning to test security procedures for the Gulf Air Bahrain Grand Prix.

She also confirmed her accomplice was given six explosive devices by one of their male co-defendants and she carried two of them in her car as she drove around Bahrain.

"She was given six bombs by him days before we were arrested at the Formula One," the Works Ministry employee told prosecutors.

"She (the 37-year-old) told me that the plan was to keep one of the bombs in a car at the parking lot of the Formula One to scare people and to ruin the F1 for Bahrain.

"I went to the F1 along with her, where we took photos of the area, a day before we were arrested.

"She would go to rallies organised by opposition groups and come back to give me orders.

"She told me that I would wear a green pillow around my waist and cover it with a hijab, so we can test the security of the F1.

"I was then arrested along with her and told F1 officials that I was playing a trick on a friend, who I wanted to believe I was pregnant."

All five Bahraini suspects earlier pleaded not guilty at the High Criminal Court, but two of the men are still at large and being tried in absentia.

The 37-year-old, a housewife, is accused of possessing an explosive device and inciting her female accomplice to take part in the attack.

Two of the men have been charged with possessing an explosive device, while the remaining male suspect and the 29-year-old are accused of being part of the plot and failing to inform authorities about the crime. The 37-year-old was jailed for five years in September for being part of the anti-government Coalition of February 14 movement, which has been branded a terrorist group.

It has been accused of blowing up ATMs, arson attacks on car showrooms and planting explosives at several locations in Manama that resulted in the deaths of two Asian expatriates.

The woman also earlier admitted treating rioters injured during clashes with police in a makeshift clinic.

The trial was adjourned to December 12. - TradeArabia News Service