The center of the massive explosion at West Fertilizer Co., has been located.

According to Assistant Texas Fire Marshal Kelly Kistner at a press conference Sunday morning, the epicenter of the blast has been found and investigators will be working inward from areas with the least damage to areas with the most damage.

Kistner also said a report will be produced about the results of the investigation, but did not say when the report would be released.

Some West residents were allowed to re-enter their homes Saturday as part of phase one of the re-entry process however phase two is still on hold.

Areas that were re-opened however had limited water, electricity and natural gas. Additionally, there is a curfew in effect in the area from 7 p.m. to 7 a.m.

According to Mayor Pro-Tem Steve Vanek, there is still natural gas testing in the area from Walnut to Spring Streets which is why those residents have not been granted re-entry.

City officials also said the smaller fires that erupted over the last couple days have all been extinguished at the scene of the explosion.

A memorial service for fallen firefighters has also been scheduled. It will be held at 2 p.m. Thursday at the Ferrell Center.