Frazier Glenn Cross
Frazier Glenn Cross is a former KKK leader who is alleged to have killed three Jews at a community centre in KansasYoutube

A former KKK leader and self-avowed white supremacist has been arrested for killing three Jews in a suspected hate crime.

Frazier Glenn Cross reportedly asked his victims if they were Jews before opening fire on them at two Jewish community centres in Kansas on the afternoon of Sunday 13 April.

The 73-year-old, who once served as a 'grand dragon' in the KKK, is alleged to have killed two people outside Overland Park's Jewish Community Center and then a third at a nearby Jewish assisted living facility on Sunday.

Dr William Corporon, his 14-year-old grandson Reat Griffin Underwood and an unidentified woman have been confirmed as the victims of the shootings.

Frazier Glenn Cross
Frazier Glenn Cross has been arrested on suspicion of murdering three Jews in KansasYoutube

Police say the gunman fired at a total of five people but missed two of his intended targets, who escaped without injury.

Eye-witness Matt Davis described how the suspect was smiling as he was led away by officers, while a televison a television crew captured the Vietnam war veteran on video shouting "Heil Hitler".

Police said Cross was armed with a shotgun, a handgun and possibly an assault weapon

President Barack Obama called the shooting "heartbreaking" while pledging federal support to the investigation.

Who is Frazier Glenn Cross?

The man suspected of the three murders is a former Green Beret from Missouri who has long history of anti-semitism.

He previously ran for a Senate seat in Missouri and once held the title of "grand dragon" of the Carolina Knights of the Ku Klux Klan.

The 73-year-old has served two prision sentences before, for running an illegal paramilitary organisation and using intimidation tactics against black people, as well as illegal weapons possession.

He is a former member of the National Socialist Party of America and after forming his chapter of the KKK, he said he wanted to model his organization on "how Hitler ran the Nazi Party".

In 2010, he told radio host Howard Stern: "That's a sad commentary for our politicians in Washington. They're all a bunch of whores for Israel. They're all corrupted to the core. And they are traitors to America."