Authorities in Berlin say they have arrested the man suspected of kicking a woman down a flight of stairs in an underground station in the German capital.<br /><br /> The assault, which was caught on a surveillance camera, happened in October, but police released the clip last week in an effort to identify the perpetrator.<br /><br /> A 27-year-old man, who is said to be from Bulgaria, has now been detained while on a bus in Berlin’s long-distance bus station. No further details have been released.<br /><br /> The seemingly casual brutality of the incident caused public outcry. The video went viral and some people offered rewards for information on the suspect. The victim was hospitalised with a broken arm following the attack.<br />