American woman killed in knife attackLONDON — A Norwegian teenager of Somali origin is suspected of going on a knife rampage through London’s tourist hub of Russell Square, killing an American woman and injuring five other people, police said Thursday.The London force sent extra officers into the city streets and mobilized counterterror detectives, but said the investigation suggested mental illness was the driving force behind the attack.The attack came just days after authorities warned the British public to be vigilant in light of attacks inspired by the Islamic State group elsewhere in Europe.

Dubai airport has delays, cancellationsDUBAI, United Arab Emirates — Delays and flight cancellations persisted today at Dubai International Airport, a day after an Emirates airliner suffered a crash-landing that saw all 300 people onboard survive while a firefighter was killed.The cause of the crash-landing of Flight No. EK521, a Boeing 777-300 coming from the southern Indian city of Thiruvananthapuram, also remained unclear.The world’s busiest international airport issued a statement saying that it is running “under restricted capacity and has since continued to operate with one runway.” It said some flights were coming into the city-state’s second airport, Al Maktoum International Airport.