latest. what is the scene, nick? reporter: good morning, alisyn. still a heavy police presence an active crime scene in the last 30 minutes saying at least 150 people have been detained. they also say interestingly enough that there is an active and credible threat against law enforcement officers. police here say they re prepared for whatever happens next. these are very dangerous, hostile biker gangs that we are dealing with. erupting in broad daylight. close to 200 members of rival broker gangs broke out into a a deadly fight sunday first, fists, chains clubs and knives escalating into a fierce gun battle. it was really really scary. we didn t know if they were coming back. reporter: 100 miles south of waco texas. as many as five criminal motorcycle gangs started fighting over a parking issue you can see names on the back of