London ? An Indian doctor arrested the same day his brother allegedly drove a Jeep into Glasgow’s main airport was charged Saturday with a terrorism offense in Britain. A distant cousin in Australia was also charged in the failed attacks in London and Glasgow.

Sabeel Ahmed, of Liverpool, became the third person to face charges in the alleged plot. He was charged with withholding information that could prevent an act of terrorism, police said in a statement. Ahmed appears in court in London on Monday.

In a sign of the heightened tension across the country, police said Saturday they had closed at least 14 Tesco supermarkets across Britain following a series of threats. However, they said the incidents were not believed to be related to terrorism.

Police in Hertfordshire, where Britain’s largest supermarket has its headquarters, said the decision was “a precaution for public safety.” Tesco said police were investigating a number of incidents, but declined to comment further.

Ahmed, 26, was arrested June 30 in Liverpool, and is the brother of Kafeel Ahmed, who is believed to have set himself ablaze after crashing into the airport and is in a Scottish hospital with critical burns.

Muhammad Haneef, 27, a distant cousin who once shared a house with the brothers in Britain, was charged Saturday in Brisbane, Australia, with supporting a terrorist group. Bilal Abdullah, a 27-year-old doctor, was charged last week by British police with conspiring to set off explosions.

Australian police charged Haneef with providing support to the bomb plot by giving his SIM card to Sabeel and Kafeel Ahmed when he left Britain for Australia in July 2006. Haneef faces a maximum of 15 years in prison if convicted.