Settlements reached this weekend halted the start of the first scheduled trial in civil litigation stemming from the April 17, 2013, explosion at a fertilizer plant in West, according to lead plaintiffs counsel.

The explosion left 15 dead, including 12 first responders, and more than 200 people injured.

At the scheduled trial, the plaintiffs, surviving family members of three men who first responded to the blast and then died, were expected to allege negligence and seek damages from a long list of defendants, including the chemical manufacturers of products allegedly in the plant at the time of the blast.