Residents of four US states – Illinois, Indiana, Kentucky, and Tennessee – have anxiously reported a loud blast. Their first suggestion was a meteor, but more frightening versions followed.

Some said, though, that they saw the actual meteor, and in some pictures, one can see a bright flash of light in the sky.

@MyGlendale About 20 min ago, heard an explosion, now this? and helicopters...what's going on? pic.twitter.com/hN0bFcm3BU — Amanda Green (@GreenstheWord) 20 ноября 2015

@MarcWeinbergWX any idea what that loud boom and shaking was in the PRP area? — Brandon Able (@BigTicketAbles) November 20, 2015

Other posted to Twitter that their saw “huge burst of light coming down,” and it looked like “100 feet off the highway, not 100 miles.”

Am I the only one who saw something fall from space in the last ten minutes? #DFW#Meteor#Aliens? #FallingDebris — Chels (@Chelseysays) 20 ноября 2015

NASA camera near Huntsville, AL picked up the fireball #meteor in the #WLKY area on their network. Details to come. pic.twitter.com/ySls2xMP2O — Matt Milosevich (@WLKYMatt) 20 ноября 2015

.@Michael4Biz friends in vicinity heard loud explosion- impact? I hope everyone is OK #meteor#Indiana — Angie Renae (@AngieHopperton) 20 ноября 2015

Anyone see that bright #fireball at 10:45 pm tonight? It looked like a blue meteor streaking below the Moon. — Dean Regas (@DeanRegas) November 20, 2015