Image copyright PA

A 25-year-old man arrested by anti-terror officers has been released without charge, police said.

He was one of four men arrested overnight on 6 and 7 November in west London and High Wycombe.

They were held on suspicion of being concerned in the commission, preparation or instigation of acts of terrorism.

The other three men - aged 22, 19 and 27 - remain in custody after further detention was granted on Thursday.

As part of the investigation, officers searched addresses in Hounslow, High Wycombe, Uxbridge, Southall, Greenford and Hayes.

These searches are now complete.

In an earlier statement, the force said the arrests and searches were "part of an ongoing investigation into Islamist related terrorism".

Officers from the Met's SO15 counter terrorism command are working with the south-east counter-terrorism unit and MI5.