BERLIN (Reuters) - Police in the northern German city of Bremen warned on Saturday of an unspecified potential danger from Islamist extremists in the city and said they were increasing security measures.
"Since yesterday evening the police in Bremen has indications from a federal authority about activities by potentially dangerous Islamist extremists in the city," police said in a statement.
Police said they were increasing "protective measures in public spaces" in response. A police spokesman declined to give further details when contacted by Reuters.
Earlier this month a carnival parade in the northern German town of Braunschweig was canceled at short notice due to a threat of an Islamist attack.
(Reporting by Scot W. Stevenson; Writing by Michelle Martin; Editing by Hugh Lawson)