Man arrested in London Olympic Park in explosives probe
A man has been arrested at the London Olympic Park site on suspicion of supplying an explosive substance.
The 61-year-old man was held as part of an ongoing investigation which saw two more arrests earlier in the week.
On Tuesday a 40-year-old female security guard was arrested near the Olympic Stadium in east London on suspicion of possessing explosives.
The man arrested on Friday evening has been taken to a police station in east London for questioning.
The Metropolitan Police said he was arrested by officers from the Olympic Site Support Unit at 1825 BST.
A 43-year-old man was arrested on Wednesday at his home in Wales on suspicion of possession of an explosive substance
Both he and the security guard arrested on Tuesday, who worked as a dog handler, have been released on bail until later this month.
Police previously said they did not believe the woman's arrest to be terror-related and said the Olympic site's safety had not been at risk.
Earlier this week building work was completed at the £486m Olympic Stadium, which will be the main venue for the games in the summer of 2012.