Agee said Tagayun fired at Richards, but he doesn't think the officer hit him. Investigators believe a Kanawha County sheriff's deputy fired the shot or shots that hit Richards.
Richards crashed into a parked car about a block and a half away after he was shot.
Agee said Tagayun could be cleared to return to duty later this week.
Cooper said prosecutor Mark Plants' office will be the final authority on the investigation.
"When someone is shot or killed when an officer is acting in self-defense or in the line of duty, we will send our report to the prosecutor's office," Cooper said.
Until the prosecutor's office analyzes all of the information, the police department, which is conducting the criminal investigation, will not comment or speculate on the case, Cooper said.
He would not say if there would be additional arrests linked to Richards because "it's a federal case and the nature of the investigation is very dangerous."
Cooper said it's unfortunate that the West Side gets another blemish in light of Friday's incident, but he said the geographic location of the shooting shows police are focusing on the area.
"The whole reason we're down there on a Friday evening is to look for drug dealers," he said. "One of the main problems we have is drug dealers and gang members from large cities coming here to make money selling crack-cocaine."
The sheriff's deputy believed to have fired the fatal shots has been placed on paid administrative leave until the investigation is complete. His name has not been released. In addition to the Charleston Police Department's investigation, the sheriff's department is also conducting an internal affairs investigation.
In 2005, Tagayun was working as a Charleston police officer when he was involved in a fatal accident in Kanawha City while rushing to the scene of a crime. He later pleaded guilty to misdemeanor charges of speeding and failure to use his emergency lights. He was fined $200 and placed on probation.
Tagayun left the Charleston Police Department in 2006 and was later hired by the city of St. Albans.
Reach Kathryn Gregory at kathr...@wvgazette.com or 304-348-5119.
Reach Rusty Marks at rustyma...@wvgazette.com or 304-348-1215.