Image by Flickr user skippytpe

Update January 5: Travis Walker has received murder and weapons charges in the death of Richardson, and the three others have received charges on accessory to murder before and after the fact, in addition to the existing kidnapping charges.

Investigators are alleging that the shooting of Richardson was prompted by Walker's belief that Richardson had some of his property.

First reporting: Three have been arrested and a fourth sought as police try to uncover a motive and occurrence of events in the mid-December shooting of Marquis Rashad Richardson.

Richardson was abducted from a Charleston peninsula home and later found dead with a gunshot wound near railroad tracks in Ladson.

Fredrick Andre SandersBeing held without bond currently with kidnapping charges are King Dominique Wilson, 22, Latasha Yvette McCall, 23, and Travaris D. Walker, 29, and still being sought is Fredrick Andre Sanders, 26, whose last known address is 26 Flood Street.

Many release-based reports abound, but the one at ABC News 4 has the better compilation; take a read here.

As always, we'll keep you posted.