British Prime Minister Theresa May was joining an EU summit in Brussels, Wednesday, April 10, 2019. (Photo: AP)

British Prime Minister Theresa May on Thursday agreed to an EU offer of a six-month delay to Brexit, EU Council President Donald Tusk said.

"EU27/UK have agreed a flexible extension until 31 October. This means additional six months for the UK to find the best possible solution," Tusk tweeted, at the end of a summit in Brussels.