One of two Ukrainian men being held over bomb attacks near three mosques has been further arrested on suspicion of murdering a 75-year-old man.
West Midlands Police said the arrest was in connection with the killing of Mohammed Saleem on 29 April.
They said the man, 25, was being held over "a further act of terrorism".
Mr Saleem died after being stabbed in the back in Green Lane, Small Heath, in Birmingham, on his way home after attending prayers at his local mosque.
Read more: BBC News