Police have arrested Thomas Mair, 49, in connection with the murder of Jo Cox, a Labour party member of the British Parliament, who was shot and stabbed multiple times during a visit to her constituency in West Yorkshire.
Police are investigating Mair of Birstall, who shouted "Britain First" before firing at the politician.
Britain First is a nationalist group that calls itself a "patriotic political party and street defense organization."
Neighbors say that Mair lived in the same house in Birstall for over 40 years and was living with his grandmother until she died about 20 years ago.
Mair, described as a "loner," was referred to as a "quiet bloke" by Kathleen Cooke.
Neighbour David Pickles, 62, told The Telegraph "He seemed to like his own company but I would not say he was unfriendly - he would always pass the time of day."