SURABAYA, Indonesia — An Indonesian court on Thursday acquitted two police officials charged with negligence leading to the deaths of 135 people in October when police fired tear gas inside a soccer stadium, setting off a panicked run for the exits. A third official was sentenced to 18 months in prison.

The disaster in Kanjuruhan stadium in East Java’s Malang city was among the world’s worst sporting tragedies. Some 43 children were among the deaths and about 580 spectators were injured.

A panel of three judges at Surabaya District Court, which was under heavy police guard, absolved police officers Wahyu Setyo Pranoto and Bambang Sidik Achmadi of charges because they found no direct causal link between the defendants’ actions and the deadly crowd crush. The two were released Thursday.

Presiding judge Abu Achmad Sidqi Amsya said the court found that Pranoto, the Malang police head of operations, never ordered the use of tear gas at the match and knew that international soccer governing body FIFA had advised against its use in stadiums.

Amsya said the tear gas ordered by Achmadi, head of crowd control, was aimed at the center of the pitch and dissipated in the wind without hitting any spectators.

“The defendant has not been proven legally and convincingly guilty,” Amsya said.

He ordered that the two defendants be released from detention immediately after the decision.

However, the tear gas fired into the stands under Hasdarmawan’s instruction caused a rush to six exits where many fans were crushed or suffocated and died, Amsya said.

Like many Indonesians, Hasdarmawan uses only one name.

The court convicted Hasdarmawan, who was head of East Java police’s mobile brigade unit at the time of the tragedy, of criminal negligence causing death and bodily harm, concluding a two-month trial in which about 140 witnesses testified. Hasdarmawan was sentenced to 18 months — far below the three years sought by prosecutors. He said he is considering appealing the decision.

Prosecutors said they are considering whether to appeal all three defendants’ cases. An appeal must be filed within seven days.

Thursday’s verdict drew outcries from rights activists and families of the victims.

Responding to the acquittal of two police officers, Amnesty International Indonesia said the authorities have failed to provide justice to victims of excessive force in Indonesia, despite vows in the aftermath of the disaster to hold those responsible to account.

“The families of victims are understandably distraught at the meager results of the cases, which have fallen far short,” the group’s executive director, Usman Hamid, said in a statement, adding that there is a deeply entrenched and broad pattern of violence and abuse of power by Indonesian security forces.

“Lack of accountability also sends a dangerous message to members of the security forces who may be reassured that they can operate with a free hand and zero consequences,” he said.

Cholifatul Noor, whose 15-year-old son, Jovan Farellino, died in the stadium crush, urged the prosecutors to appeal the verdicts.

“This court decision really hurts us, this is another tragedy for us who seek justice for our children,” she said with tears running down her face. “My beloved son should not die while watching football. … What if this happened to their children?”

“I will not stand by this decision, I will keep fighting until all those who are responsible for the deadly stampede at the stadium get the harshest punishment,” she said.

Authorities in Surabaya, the capital of East Java province, deployed 350 police officers to secure the court for its ruling Thursday. Arema fans, known widely as “Aremania,” were prohibited from coming to Surabaya during the trial to avoid any clashes.

Abdul Haris, who chairs the organizing committee for Arema FC — the team that hosted the match — was sentenced on March 9 to 18 months in prison. The club’s security chief, Suko Sutrisno, got 12 months. Surabaya District Court judges said the two defendants had not verified the safety of the stadium since 2020 and did not prepare an emergency plan to handle special cases per the Football Association of Indonesia’s 2021 security and safety regulations.

On Wednesday, prosecutors said they filed appeals to the higher court against the sentences for Haris and Sutrisno.