Updated

The 41-year-old suspect in the assassination of former Japanese Prime Minister Shinzo Abe reportedly has told police Friday that he was dissatisfied with the ex-leader and wanted to kill him, but not over his political beliefs. 

Tetsuya Yamagami, who hails from Nara – where the 67-year-old Abe was gunned down while making a speech – is currently facing an attempted murder charge. But local police are expected to upgrade the charge to murder, according to Japanese broadcaster NHK. 

"Former Prime Minister Abe was giving a speech normally, but a man came from behind. The first shot heard only a very loud sound and the person did not fall down. However, the moment the second shot was shot, former Prime Minister Abe collapsed," a witness told NHK. "The [suspect] didn't seem to run away, he stayed there and the gun was there." 

The killing has sent shockwaves around the world and throughout Japan, a country with notoriously strict gun ownership laws. 

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Suspect in shooting of Japanese former prime minister Shinzo Abe is detained

A police officer detains a man, believed to have shot former Japanese Prime Minister Shinzo Abe, in Nara, western Japan July 8, 2022 in this photo taken by The Asahi Shimbun.  (The Asahi Shimbun/via REUTERS)

Shinzo Abe shooting suspect is taken down by police officers

A man believed to have shot former Japanese Prime Minister Shinzo Abe is tackled by police officers in Nara, western Japan, on July 8. (The Asahi Shimbun/via REUTERS)

Police said Yamagami was responding calmly to questions and had admitted to attacking Abe, telling investigators he had plotted to kill him because he believed rumors about the former leader's connection to a certain organization that police did not identify.

Ministry of Defense officials that spoke to NHK said the gun used in Abe’s assassination appears to have been homemade and the suspect, Yamagami, spent three years serving in the country’s Maritime Self-Defense Force between 2002 and 2005. 

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"The weapon used by Abe's assailant made a noise that could be compared to an explosion, and white smoke rose into the air after it was discharged. A gunpowder-like smell could be detected afterward," read a report Friday by the Kyodo News, which added that one of their journalists on-scene said the weapon appeared to have been held together with duct tape. 

Shinzo Abe shooting suspect is taken into custody by police officers

Tetsuya Yamagami is seen being taken into custody. (Takenobu Nakajima/via REUTERS)

Abe was struck about two minutes and 20 seconds into his speech, according to NHK. 

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The broadcaster says video captured prior to the shooting purportedly shows Yamagami scanning his surroundings while standing near a footpath behind Abe. 

Shinzo Abe shooting suspect is taken down by a police officer

Tetsuya Yamagami is tackled bty authorities following the shooting.  (The Yomiuri Shimbun/via REUTERS )

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He then takes something out of a bag he was carrying and walks slowly toward Abe, coming several yards away from him, before raising the gun and opening fire, the station added. 

Following his arrest, police found possible explosives at Yamagami’s apartment in Nara, NHK also reported. 

Home of Shinzo Abe shooting suspect is searched by police in Japan

Police investigators arrive at the residence of the suspect who was believed to have shot former Japanese Prime Minister Shinzo Abe, in Nara, Japan July 8, 2022 in this photo taken by Kyodo.  (Kyodo via REUTERS)

Police also they confiscated similar weapons and his personal computer.

The Associated Press contributed to this report.