Sydney, Dec 15 (ANI): Australian police said on Monday they had not had direct contact with any armed offender holding an undisclosed number of people hostage at a cafe in central Sydney. When asked if the police know about the motivation behind the hostage situation, Police Commissioner Andrew Scipione said they are still determining it. Police said they are still determining what the flag means. New South Wales Premier Mike Baird said the public and police were being tested. Dozens of heavily armed Australian police hacve surrounded the Sydney cafe. Meanwhile, Indian Prime Minister Narendra Modi expressed concern for the people who are being held hostage. Modi on Monday called the incident inhuman and deeply unfortunate. He tweeted, "the incident in Sydney is disturbing. Such acts are inhuman and deeply unfortunate. I pray for everyone's safety."