CNN  — 

The man who detonated an RV bomb in downtown Nashville early Christmas morning was a loner with no significant criminal record and as yet no signs of a political ideology.

Anthony Quinn Warner, a 63-year-old from Antioch, Tennessee, died when his recreational vehicle exploded on 2nd Avenue North, damaging more than 40 buildings and injuring at least eight people.

Yet no one else died in the blast, partly because Warner’s RV had broadcast ominous warnings in a computerized female voice that it would soon explode, spurring police and bystanders to leave the area.

The unusual warnings and sparse evidence of Warner’s politics have prevented authorities from calling the bombing an act of terrorism, which by definition is an act in furtherance of a political goal.

Here’s what we know about the man behind the bombing.

Investigators have linked him to the RV