( CNN ) Officer Michael Slager 's five-year career with the North Charleston Police Department in South Carolina ended after he resorted to deadly force following a routine traffic stop . Slager , 33 , has been fired , officials said Wednesday . His wife is eight months ' pregnant and the city will continue paying for her medical insurance until the baby is born , North Charleston Mayor Keith Summey told reporters . He also has two stepchildren . His mother was interviewed by ABC News on Thursday . She told ABC her son loved being a police officer . `` I ca n't imagine him doing something that . ... It 's not like him . That 's just not his character , '' Karen Sharpe said . She told ABC she has n't watched the video of the shooting . Slager initially told investigators that he used a Taser in a confrontation Saturday with Walter Scott , who was pulled over for a busted taillight . But Scott went for the Taser , according to Slager . A widely circulated video of the shooting death of the 50-year-old unarmed African-American man by the white police officer tells another story : Scott attempts to run . His back is to Slager , who , from a few yards away , raises his gun and fires . Slager is now charged with murder . The FBI is involved in the investigation of the slaying of the father of four . `` Shots fired and the subject is down , '' Slager said moments after the shooting , according to reports . `` He took my Taser . '' Slager was proficient with the nonlethal Taser . According to personnel records , he scored 50 out of 50 on a Taser certification exam in 2011 . Before the officer starts firing at Scott , the video shows a dark object falling behind him and hitting the ground . It 's not clear whether that is the Taser . Later in the video , when Slager approaches Scott 's body , he drops a dark object next to the man . Again , it 's not clear whether that 's the Taser . It 's unknown whether Scott took the officer 's Taser or whether the officer picked the object up and moved it closer to the body . Slager was named in a police complaint in 2013 after he allegedly `` tased a man for no reason '' before slamming him to the ground and dragging him , according to the North Charleston Police Department . At the time , Slager was searching for a suspect who was described as being 5-feet-5-inches tall . The African-American man he confronted was 6-feet-3 inches tall . A lawyer for the man who filed the complaint , Mario Givens , said his client plans to file a lawsuit . `` The citizens of North Charleston should n't have to live in the fear , '' the lawyer , Eduardo Curry , told reporters Thursday . Givens said Slager came to his door , ordered him out of the house and then tased him . `` It was painful , '' he said . `` I fell . I have a couple bruises . '' Slager was later cleared in that incident . `` I was upset , '' Givens said . `` They took a real long time to even investigate the case . '' In another complaint in January , Slager was cited for failing to file a report after an African-American woman called police because her children were being harassed . Slager had worked as a waiter before joining the military , records show . He served in the U.S. Coast Guard from 2003 to 2009 , according to a job application filed with the North Charleston Police Department . That application , filed in January 2009 , said Slager had not been convicted of a felony in the past seven years . Personnel documents describe Slager as `` enthused '' when he joined the force and said he demonstrated `` great officer safety tactics '' in dealing with suspects . South Carolina senators , governor condemn police shooting . Slager 's annual in-service mandatory training included a range of topics from first aid to firearms and Taser use . Slager passed his certifications . In August , Slager passed a firearms qualification . From 2009 to 2014 , Slager qualified in the use of his Glock firearm . He received and passed yearly training in `` bias based profiling '' and `` ethics , '' the documents said . He also was certified by the S.C. Criminal Justice Academy in March 2013 as having `` met and successfully completed the in-service requirements '' as a law enforcement officer . Slager completed a separate 10-hour `` active shooter incident response training '' course in December 2013 . According to the documents , Slager was involved in a `` nonpreventable '' traffic accident last year when a motorist with his car in reverse struck the officer 's patrol car . The driver fled the scene . Since graduating from the police academy in 2010 , a supervisor twice noted in training reports that he `` spoke with ( Slager ) in reference to certain procedures in reference to conducting motor vehicle stops and citizen contacts . '' No other details were provided . Slager signed his oath of office with the police force on March 1 , 2010 , pledging to `` faithfully serve the citizens of this city '' and `` never abuse my authority either by words or acts . '' `` I will enforce the law courteously and appropriately without fear or favor , malice or ill will , never employing unnecessary force or violence , '' the oath said . Who was Walter Scott ? CNN 's John Newsome contributed to this report .
Officer Michael Slager 's mother says she could n't watch the video of the incident . Score: 6