this morning the harrowing moments after a florida state law professor dan markel was gunned down in he driver's side window is all bashed in and he's got blood all over his head. >> reporter: markel still breathing during this 911 tape released thursday. >> he's still moving around. so he's alive. >> reporter: 12 minutes later the caller still urging the 911 dispatcher to move faster. >> you need to send an ambulance in a hurry. >> the response. >> the officer is going to be there first. they're not going to come until we figure out what's going on. >> they better be if this guy's got a shot. >> reporter: he was shot as he drove his car into his garage on july 18th. sources telling abc news the killer fired a single bullet through the driver's window hitting markel just beneath the jaw line. the killer and motive still unknown. but that caller noting he happened upon markel's car because he had been worried about an uptick in crime. >> i've heard about break-ins in the area and so i decided to walk over and take a look. >> reporter: we learned 19 minutes passed before that good samar

. >> reporter: tallahassee police first learned that florida university law professor dan markel hadhead when a neighbor called 9. >> driver's side window is all dashed in. and he's got blood all over hid head. >> reporter: the caller said he found him in his car in his home garage still alive and urged a 911 dispatch tore move faster. >> they're on the way, okay? >> they better be if this guy's got a shot. >> reporter: the took the ambulance a full 19 minutes to respond to the scene which authorities blame on the dispatcher as failing to first list the call as a high majority. >> result was, the result was not as fast as it would have been in a priority one situation. >> reporter: he died the next day and the attorney says he's frankly surprising the by the lack of response. >> hospital is three minutes away where the ambulance is deployed. police say markell, a divorced father of two was targeted by his killer. and investigators are investigating and potentially a 38 on a blog site. so, yes, all means necessary are important like shutting people like you down. in january, markel ro

. >> reporter: tallahassee police learned florida state university law professor dan markel was shot in the head when a neighbor called 911. >> the driver said the window was bashed in and he's got blood all over his head. he's not responding to me. >> reporter: he found him in his car, in his home garage, still alive and urged the 911 dispatcher to move faster in sending paramedics. >> they are not going to come until we figure out what's going on. >> this guy's got a shot. >> reporter: it took the ambulance 19 minutes to respond to the scene, which authorities blame on a dispatcher failing to list the call as a high priority. >> the result was the response was not as fast as it should have been. >> reporter: he died the next day. an attorney says he is disturb d by the delayed response. >> a neighbor and friend of dans. the hospital is three minutes away where the ambulance is deployed. >> reporter: markel was targeted by the killer. a police spokesman says detectives are investigating a number of motives and potentially threatening comments on a blog site like this one, two and a