Austria's Interior Ministry says four people have been shot and killed in a standoff with a gunman, including three policemen.
Interior Ministry spokesman Karl-Heinz Grundboeck says a standoff was continuing today with the suspect, who was holed up in a farm building west of Vienna. Police said he was firing sporadically at them.
A police officer had been missing after two others and the driver of an emergency rescue vehicle were confirmed killed overnight.
Grundboeck says the missing police officer was found shot dead in his patrol car.
