text: Ex-convict and white supremacist Ryan Giroux, 41, has pleaded not guilty to a string of offences, after Mesa police say he shot six people, killing one . A convicted burglar and white supremacist has pleaded not guilty to killing one person and wounding five others in a rampage in Arizona, USA. Ryan Giroux is accused of shooting three people in a Phoenix motel, killing a man and injuring two women during the incident in March 18 in the suburb of Mesa, and will now stand trial. Another man was shot while working at a nearby restaurant, and then two more at separate apartment complexes, about two miles away. Police swarmed the city in a massive response, with Mesa police using sniffer dogs and searching cars to find the gunman, placing several buildings, a school and college in ‘lockdown’. The search ended with Giroux’s arrest in an empty apartment. The 41-year-old has now pleaded not guilty to one count of first-degree murder and 22 other charges at a hearing at the Maricopa County Superior Court on Monday. He has convictions in three states totally more than eight years for burglary, theft, armed aggravated assault and a marijuana violation, according to a previous statement from the Arizona Department of Corrections. Scroll down for video . Giroux is pictured in an earlier mugshot with tattoos of the words 'SKIN' and 'HEAD' over his shaven eyebrows. He has been accused of shooting dead one man and injuring five others during a rampage in Phoenix, Arizona . Police launched a massive manhunt to find the culprit behind the shootings, locking down a school and college . Giroux is reported to be a member of the Hammerskin Nation, a notoriously violent racist skinhead group connected with the Aryan Brotherhood. He previously had the words ‘SKIN’ and ‘HEAD’ tattooed over his eyebrows, but recent photos suggest these have been removed. His left temple also featured the number ‘88’, the neo-Nazi code for Heil Hitler.
target: Ryan Giroux denies killing a man during shootings in Phoenix in March .
  Rampage through suburbs let to huge police manhunt for the shooter .
  Ex-convict and 'skinhead' Giroux is a member of white supremacy group .