The city of Amarillo says Mike McGee announced his retirement effective Friday. This comes nearly two months after McGee and assistant director Shannon Barlow were both placed on paid administrative leave. Scott McDonald, the city's chief building official, continues to serve as interim director. The Animal Control investigation began when concerned citizens questioned the practices of putting down animals. The case is set to be presented to the grand jury again in two weeks, and the city says they will continue moving forward with improvements at the animal shelter.