Days after a Christmas Day explosion rocked downtown Nashville investigators are still searching for a motive.

The bombing injured three people and damaged dozens of buildings downtown.

Officials say the man accused of exploding the bomb, Anthony Quinn Warner, was killed in the blast.

They say the 63-year-old gave away his car and home and told people he was retiring and dying of cancer.

A neighbour said Warner told him during a casual conversation days before the explosion that “Nashville and the world is never going to forget me.”

But police say he didn’t leave behind a clear digital footprint or any other obvious clues to explain why he set off Friday’s explosion or played a message warning people to flee before
the blast.

Meanwhile, new video has been released showing officers near the blast site minutes before the explosion.

Melisa Raney reports.