fusion correspondent rafa fernandez, thank you. >> caller: thank you so much for having me. >>> and now we're going to move on to this morning's other top story. a man hunt is underway in berlin. >> a live look at daybreak there in berlin. police say they have the wrong the attack, we have more details how this unfolded from abc's matt gutman. >> reporter: isis claims credit for the scenes of horror. holiday shoppers huddled on the ground, some injured, others helping the wounded. here in germany, an all-out man hunt for those responsible. police releasing a pakistani man unable to tie him to the crime. now intense focus on the murder weapon, that semitruck. the front window shattered, christmas garland tangled in the glass. workers are hauling away the truck, they hope what's inside could yield key clues in this investigati investigation. the truck driver discovered dead inside, german officials say he was shot, but no gun found on the scene. he was delivering steel beams from italy to germany. investigators are now scouring the area on the outskirts of berlin where he may have parked.

rafa fernandez from fusion, thank you for joining us and for the update there. >> powerful images. >> coming up, we'll continue some reports from overseas, a holiday change of travel plans from queen elizabeth, and why she put off the app newel christmas trip to the family's country estate. >>> a stunning performance at a christmas show that's going viral, a global audience now enjoying one young girl's amazing talents, and she has a special story. >>> check out the christmas outfit. our holiday outfits this m on instagram. you're watching "world news now," your eyes may hurt after. take delsym, the #1 12-hour uncontrolcough medicine. it helps control the impulse to cough for 12 hours. which means, you're controlling your cough on your morning commute. and later when you're joking with beth... even when most cough medicines stop, delsym is still working. ♪ and when your days' over, your cough is still under control. thanks to the #1 12-hour cough medicine. delsym. the cough controller. >>> the natural gas leak caused a massive explosion at columbus, ohio. a restaurant was destroyed an

rafa fernandez who covers mexico has more on the search. >> reporter: careful not to rush to conclusions but some indicate there might have been a nexus of fireworks in the area or ones that don't comply with norms of law. >> just days ago they said the market there had been called the safest in latin america. >>> north carolina's controversial bathroom law still stands. lawmakers met in special session but failed to repeal the law. democrats and republicans are blaming each other for playing politics. the law requires that people use the bathroom which corresponds to their gender at birth. it is already cost the state millions in lost business. >>> overseas new concerns about the health of britain's queen elizabeth. 90-year-old and her husband delayed holiday travel because both have severe colds. palace officials say there are no grave concerns about the queen's health. just recently it was announced that the queen would step down from her role as patron of 20 charities. >>> well, still ahead, new details overnight in the cause of the death of alan thicke. >> plus a highway drama shovi

our fusion reporter rafa fernandez covers mexico and joins us by phone from mexico city.to you. what are we learning right now on the latest with the investigation? >> caller: good morning. well, the mexican attorney general's office is still investigating. they are being pretty careful not to rush to conclusions, but there's reports that indicate there might have been a nexus of fireworks in the area or just even illegal fireworks that do not comply with the safety norms established by mexican law. this has happened before. authorities have had a difficult time cracking down on the sale of illegal fireworks in different markets throughout the country, and so right now, it could be anything from, you know, a short circuit to the heat in the area to someone lighting a cigarette by accident. authorities have not revealed details, and they are careful not to rush to conclusions. i think it's going to be very hard for top mexican officials to take the fault for this. likely they'll blame it on one of the stands in the market. >> and rafa, some of the victims are being treated

. >>> now let's check in with fusion reporter rafa fernandez who is in mexico city. ewitnesss telling you about what they saw? >> reporter: well, they're saying that the firework explosions went off for more than an hour. there were many secondary explosions. and there was a big stampede of people and visitors that were at the market at the time the explosion went off. so a lot of people were falling to the ground. and they literally told me that the ground was shaking when all these fireworks were going off. but there were dozens of people that are dead now, dozens that are at the hospital. the governor of the state of mexico said a lot of the bodies cannot be identified because of the degree to which the bodies.were burned. >> such a dramatic situation there. rafa, you've been to the actual scene. describe to me what did it smell like, what did it look like from your perspective as you got there? >> reporter: well, it smells like gunpowder. there was a big cloud of smoke that started to disburse at night. a lot of people crying, a lot of state police, firemen, the m