The sister of an alleged ringleader in the Easter Sunday terror attacks in Sri Lanka said in a new interview that she “strongly deplores” his actions.

Mohammad Hashim Madaniya — who is being interviewed by police but is not considered a suspect — told the BBC she only learned of her brother Zahran Hashim’s alleged role in the carnage through the media and is horrified by the news.

“I never thought, even for a moment, that he would do such a thing,” she said. “I strongly deplore what he has done. Even if he is my brother, I cannot accept this. I don’t care about him anymore.”

Hashim, a fiery Islamic cleric who uses the burning Twin Towers as a backdrop for his hateful online sermons, was named earlier this week as the mastermind behind the coordinated attacks on three churches and four hotels that killed 359 people.

In the wake of the attacks, video has emerged showing a man believed to be Hashim pledging allegiance to Abu Bakr al-Baghdadi, leader of the Islamic State of Iraq, the BBC reported.

It was unclear whether Hashim was directly connected to ISIS or simply was a local jihadist who pledged allegiance, according to the report.

“We had a very good relationship during our childhood,” his distraught sister told the outlet. “He was very friendly with everyone in the neighborhood. But for the last two years, he has not been in contact with us.”

Madaniya also said she hadn’t heard from her elderly parents, who had left their home a few days before the bombings.

“It makes me think that my brother could have kept in touch with them,” she told the BBC.

Authorities also are attempting to track down Hashim’s younger brother, according to the report.

Hashim began as a small-time preacher, but his teachings became more and more popular in some areas, she added.

Many residents of his hometown, the Muslim community of Kattankudy, were reluctant and afraid to speak about him.

“That someone from our area has been linked to the attacks is really a worry for us,” Mohammad Ibrahim Mohammad Zubair, leader of the Federation of Kattankudy Mosques, told the outlet. “We are shocked and upset by it. Our community doesn’t support hardliners. We believe in harmony and unity.”