Former Prime Minister Shinzo Abe, Japan's longest-serving leader, was in grave condition on Friday after being shot while campaigning for a parliamentary election, with media saying a man opened fire with an apparently homemade gun.

• PM Modi announces national mourning on Saturday
• Former Japanese Prime Minister Shinzo Abe died on Friday after being shot twice at a campaign event in the Nara region, reports ndtv.com quoting AFP.

Prime Minister Fumio Kishida condemned the shooting in the western city of Nara in the "strongest terms" while Japanese people and world leaders expressed shock at the assassination attempt in a country in which political violence is rare and guns are tightly controlled.

Struggling to keep his emotions in check, Kishida said Abe, 67, was in grave condition. "Everything that can be done is being done to revive him. I'm praying from the depths of my heart that his life will be saved," Kishida told reporters, adding he was not aware of any motive.

"This attack is an act of brutality that happened during the elections - the very foundation of our democracy - and is absolutely unforgivable."

A fire department official said earlier that Abe appeared to be in a state of cardiac arrest when airlifted to hospital.

Police said a 41-year-old man suspected of carrying out the shooting had been arrested. NHK quoted the suspect, identified as Tetsuya Yamagami, as telling police he was dissatisfied with Abe and wanted to kill him.

Abe was making a campaign speech outside a train station when two shots rang out at about 11:30 a.m. (0230 GMT). Security officials were then seen tackling a man in a grey T-shirt and beige trousers.

"There was a loud bang and then smoke," businessman Makoto Ichikawa, who was at the scene, told Reuters, adding that the gun was the size of a television camera.

"The first shot, no one knew what was going on, but after the second shot, what looked like special police tackled him."

Ex-PM being given transfusions

Kyodo published a photograph of Abe lying face-up on the street by a guardrail, blood on his white shirt. People were crowded around him, one administering heart massage.

Nara emergency services said he had been wounded on the right side of his neck and left clavicle. His brother, Defence Minister Nobuo Kishi, said Abe was getting blood transfusions.

NHK showed live footage of Abe's wife, Akie, on her way by train to the hospital where he is being treated.

'Nothing like this ever'

Airo Hino, political science professor at Waseda University, said such a shooting was unprecedented in Japan. "There has never been anything like this," he said.

Senior Japanese politicians are accompanied by armed security agents but often get close to the public, especially during political campaigns when they make roadside speeches and shake hands with passersby.

In 2007, the mayor of Nagasaki was shot and killed by a yakuza gangster. The head of the Japan Socialist Party was assassinated during a speech in 1960 by a right-wing youth with a samurai short sword. A few other prominent postwar politicians were attacked but not injured.

Shooter served in military

Police said the suspected shooter was a resident of Nara. Media said he had served in Japan's military for three years until 2005. Defence Minister Kishi declined to comment on that.

Abe served two terms as prime minister, stepping down in 2020 citing ill health. But he has remained a dominant presence over the ruling Liberal Democratic Party (LDP), controlling one of its major factions.

Kishida, Abe's protege, had been hoping to use the election to emerge from Abe's shadow and define his premiership, analysts have said. Kishida suspended his election campaign after the shooting. All main political parties condemned the attack.

'Very, very sad'

U.S. Secretary of State Antony Blinken expressed deep concern over Abe's condition. "Our thoughts, our prayers are with him, with his family, with the people of Japan," Blinken said on the sidelines of a G20 meeting on the Indonesian island of Bali.

"This is a very, very sad moment. And we're awaiting news from Japan."

The United States is Japan's most important ally.

The yen rose and Japan's Nikkei index (.N225) fell on news of the shooting, partially driven by a knee-jerk flight to safety.

Abenomics

Abe is best known for his “Abenomics” policy of aggressive monetary easing and fiscal spending. He also bolstered defence spending after years of declines and expanded the military’s ability to project power abroad.

In a historic shift in 2014, his government reinterpreted the postwar, pacifist constitution to allow troops to fight overseas for the first time since World War Two. The following year, legislation ended a ban on exercising the right of collective self-defence, or defending a friendly country under attack.

Abe, however, did not achieve his goal of revising the U.S.-drafted constitution by writing the Self-Defense Forces, as Japan’s military in known, into the pacifist Article 9.

Abe first took office in 2006 as Japan’s youngest prime minister since World War Two. After a year plagued by political scandals, voter outrage at lost pension records, and an election drubbing for his ruling party, Abe quit citing ill health.

He became prime minister again in 2012.

Abe hails from a wealthy political family that included a foreign minister father and a grandfather who served as premier.