Baton Rouge Police Chief Carl Dabadie and East Baton Rouge Mayor-President Sharon Weston Broome were at the scene and both expressed the need to keep the deputy's family in people's thoughts and prayers.
Roach says the alleged shooter was relatively new to the business, but he did have a key to the store.
Louisiana State Police are now in charge of the shooting investigation. Wiley was accused of inappropriately touching a 10-year-old girl with his mouth.
"It's a tragic night for the East Baton Rouge Sheriff's Office, one of our deputies has been shot and killed", East Baton Rouge Sheriff's Office spokeswoman Casey Rayborn Hicks said at the press conference.
The owner of Classic Cuts, Lilnetta Roach, said Monday that all her employees had their own keys to the strip mall location and it wasn't uncommon for some of her workers to be at the location until late into the night because of how long some hair appointments can take.
Wiley was arrested in December 2004 for attempted first-degree murder.
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"I rise today with a saddened heart for my friend and comrade Sgt. Shawn T. Anderson, a veteran and highly decorated police officer who was shot dead on Saturday evening as he attempted to arrest a rape suspect", Higgins said.
He was also sentenced to two years in prison in 2011 for "inciting a felony" after he was arrested on a count of indecent behavior with a juvenile, the records state. The girl said she knew Wiley for about a month before the rape occurred and he had given her several tattoos without parental consent. He served 13 months in jail. He was booked with possession of a stolen firm and possession of a firearm by a convicted felon, but was never prosecuted.
And, per the WAFB report, this is what Baton Rouge lost as a result...
Sgt. Shawn Thomas Anderson spent 18 years with the sheriff's office. He served in various divisions including Parish Prison, Narcotics, K-9, Emergency Services Unit, Maritime Response Team and SWAT.
One year ago, Sgt. Anderson was recognized for bringing a life into the world. Anderson and two other deputies were flagged down by a pregnant woman and her husband on the way to the hospital March 19, 2016.