Emergency personnel working at Debsirin Nonthaburi School. [Credit: Reuters/Chalinee Thirasupa]

No fewer than seven people have been killed in a shooting spree orchestrated by unnamed 14-yar-old male teenager in Thailand, according to a Reuters report on Friday.

Among the victims were his grandparents and five other staff, including teachers of the Debsirin Nonthaburi School, on the northwestern outskirts of the capital city, Bangkok.

The gunman fired at least 26 bullets using a gun that belonged to his grandfather, while an additional 34 rounds were found, the report stated.

Prime Minister Anutin Charnvirakul told reporters, “This is terrible for something like this to happen. I’m sad for those who died and sad for something like this to happen in our country.”