Europe minister David Lidington has warned Russia that it risks "further damaging consequences" if it continues to escalate tensions in Ukraine.
Mr Lidington said that the entry of a Russian convoy into Ukraine is a "provocative act that violates previous understandings".
More top news
A 35-year-old and a 27-year-old man, both from the Birmingham area, have been arrested and remain in police custody.
Molly Owens, was reported missing on Friday and is believed to be with her father, who is wanted after failing to appear in court.
Former Diversity dancer Robert Anker has died in a car crash in Canada.