Homemade shotgun used to assassinate Shinzo Abe, Japanese police say

The body of former Japanese Prime Minister Shinzo Abe has arrived back in Tokyo after he was shot and killed at a campaign rally Friday. NBC’s Janis Mackey Frayer reports for Saturday TODAY on the investigation into the weapon used by the gunman and how he was able to get close enough to Abe. Warning: Some of the video is disturbing.