On Tuesday, a California prosecutor said he would not rule out seeking the death penalty for a Chinese-American man who harbored anti-Taiwanese sentiments and opened fire at a church banquet, killing one and injuring five others.

Orange County District Attorney Todd Spitzer told CNN that the suspect, David Chou, 68, will face a single count of murder with a firearm in connection with the Sunday attack. In addition, he is charged with five counts of attempted murder and four counts of unlawful possession of an explosive.

Spitzer said the gunman brought an arsenal of weapons to Geneva Presbyterian Church in Laguna Woods, California, where he targeted people gathered for a Taiwanese-American church banquet.

Spitzer stated, “That suspect was prepared to kill everyone in that church.” “I believe he planned to kill everyone and then blow up the church.”

The FBI announced the launch of a hate-crime investigation into the case. Spitzer said he may add a hate crime enhancement to the charges and will consider seeking the death penalty against Chou, noting that Governor Gavin Newsom has effectively suspended capital punishment. The last execution in California occurred in 2006.

“I’ll have to decide whether we want life without the possibility of parole or death. That is a grave responsibility “According to Spitzer. The gunman chained the doors so his victims couldn’t escape, according to Spitzer, noting that he chose a vulnerable community with elderly people.

According to sheriff’s officials, up to 40 people, members of a Taiwanese Presbyterian congregation from nearby Irvine, California, were attending a luncheon honoring a former pastor when the shooting began.

Chou was born in China and is a US citizen and resident of Las Vegas. According to authorities, he drove to Southern California on Saturday and arrived at the church on Sunday morning.

Spitzer stated that the suspect was motivated by anti-Taiwan sentiments. His parents were Chinese, but he grew up in Taiwan. In Taiwan, where there was a lot of anti-China sentiment at the time, he was not treated well.

“It appears he has carried that resentment throughout his childhood and adult life,” he said. “He used this church opportunity to go after those church members, basically to say I’m going to get even with the way I was treated.”

The sheriff’s department said in a statement late Monday that investigators had “determined that the suspect was upset about political tensions involving China and Taiwan,” but provided no further details.

Dr. John Cheng was killed in the shooting. Orange County Sheriff Don Barnes said the 52-year-old was shot when he tackled the gunman, crediting Cheng’s bravery with preventing more deaths.

After subduing Chou, other congregants, including a pastor, overpowered him and tied his legs together with an electrical cord, detaining him until sheriff’s deputies arrived.

According to the sheriff’s department, four men ranging in age from 66 to 92, as well as an 86-year-old woman, were injured.

Taiwan President Tsai Ing-wen was deeply concerned about the incident and directed the island’s foreign ministry to assist the victims and their families, according to the ministry on Tuesday.