WASHINGTON  :  At least nine outlaw biker gang members were killed in Texas on Sunday when a brawl between rival groups erupted into a deadly gunbattle in front of terrified families. Police told local reporters in Waco that they were amazed that none of the people eating lunch in nearby restaurants were wounded in the crossfire as members of up to five gangs fought in a parking lot with guns, clubs, knives and chains.  “In 34 years of law enforcement this is the most violent crime scene I have ever been involved in,” said a sergeant. “Twenty-five feet away there were families,” he said. “This is one of the worst gun fights we’ve ever had in the city limits. They started shooting at our officers.” The battle broke out in a restroom at the Twin Peaks Sports Bar and Grill, an infamous biker watering hole in a popular shopping and dining center in Waco known as the Central Texas Marketplace, before spilling out into the bar area and then the parking lot.  Police had been aware of a planned biker gathering in advance and officers intervened quickly, but not before gang members had escalated a punch-up to a knife and chain fight — and then to a shoot-out. Authorities ordered businesses in the area closed and moved witnesses and suspects to safety, amid reports that more gang members were heading to the area to pursue the feud.  Swanton said police had made their concerns known beforehand to Twin Peaks, but that the bar had not been cooperative. Local news outlets reported that as many as 18 people were wounded, mostly from gunshot and stab wounds, and Swanton told reporters that more than 100 weapons were collected from the chaotic and bloody scene. Officers had fired their weapons in a bid to quell the melee, but Waco police said in a Facebook posting that no officers were injured. Local reports and television images showed scores of suspects being rounded up, questioned and in some cases loaded into police vans. Initial reports said that the gangs concerned were the Bandidos and the Cossacks, but later police told local media that up to five distinct groups may have been involved. News photographs of some of the Cossacks members taken in Waco after Sunday’s violence also showed some of the mainly white gang members sporting neo-Nazi tattoos and symbols.  Local CBS television affiliate KWTX reported that the area was secured by police after the violence and police warned residents to stay away as armed suspects continued to arrive.  “We are closing the entire Central Texas Marketplace if you are here leave now. For safety reasons we again assert do not come to this area!” Waco police said on Facebook. “Officers are continuing to arrest individuals coming to the scene with weapons. This is not the time to sightsee as we are dealing with very dangerous individuals,” it posted. Waco is in central Texas and has a population of about 129,000.  Meanwhile, nearly 200 people were arrested on Monday after the shootout. “Some of those (charged) may have been witnesses, many of those are going to be individuals involved in the shooting, and criminal charges may be applicable for that,” he said. Police are worried about retaliation over the attack, saying officers and hospital staff have been threatened. “I will tell you that we have had threats against law enforcement officers throughout the night,” Swanton said.