Heinsberg (dpa / lnw) – A growling dog made a cyclist in Heinsberg become aggressive. According to the police, the previously unknown man hit the 16-year-old dog owner with a bottle. After being hit in the head, the teenager lost consciousness. An unknown older man helped the dog owner up again. The Heinsberg district police are now looking for witnesses to the attack and the helper. The cyclist is said to have been about 30 years old, unkempt and allegedly drunk.