Eric Smith Update: Jeremy Powell, murder suspect who fatally shot Miss. detective in police headquarters, took his own life, investigators say 2008 photo of Detective Eric Smith of the Jackson Police Department / AP Photo/Jackson Police (CBS/AP) JACKSON, Miss. - Authorities revealed Friday that the murder suspect who shot a detective at police headquarters in Mississippi's capital city also fatally shot himself after the attack. Mississippi Bureau of Investigation spokesman Warren Strain said 23-year-old Jeremy Powell shot Det. Eric Smith before killing himself. Previously, Jackson police did not disclose who fired the shot that killed Powell before the state agency took over the investigation. The men died in a third-floor room Thursday where Smith was interrogating Powell after his arrest. Powell was arrested in connection with the Monday stabbing death of a 20-year-old Jackson man. Autopsies were to be performed Friday, said Hinds County Coroner Sharon Grisham-Stewart. City and state officials continued to mourn the death of Smith, a detective who had led the investigation of a number of high-profile murder cases in Jackson, Mississippi's largest city. Smith, 40, was described as a tall and fit officer who was with the department since 1995. Mayor Harvey Johnson Jr. and Jackson Police Chief Rebecca Coleman asked for a moment of silence at noon Friday. "Let us all come together as a city to mourn the loss of this exceptional member of the Jackson Police Department family," Johnson said in a statement. Though we will never know the full measure of sorrow experienced by the family of Detective Smith, we can let them know that we stand with them during this difficult time. Gov. Phil Bryant, a former Hinds County sheriff's deputy, also noted Smith's passing at a ceremony marking the 75th anniversary of the Mississippi Highway Patrol. More on Crimesider April 5, 2013 - Eric Smith, Miss. cop, fatally shot by murder suspect inside police headquarters, police say