Syria on Tuesday condemned strikes on the country's south by Jordan a day earlier that Amman said targeted the ISIS group in retaliation for a deadly church attack last week.
A foreign ministry statement expressed "condemnation and rejection, in the strongest terms", calling the strike "an unacceptable violation and breach of Syrian airspace without any prior coordination".
It also said the attack was "a blatant violation of the principles of good-neighborliness and Syrian national sovereignty".
Earlier, Syrian authorities said at least six people were killed in the strikes on Monday in the country's south.
In a statement, the government stressed that the military operation was conducted without prior coordination or notification with the Syrian side.
In an updated statement, health authorities in Daraa province reported "six martyrs, including three children and a woman", after earlier reporting eight victims. Amman has said the strikes were coordinated with Damascus.
The Syrian government “expressed its full solidarity with the affected Syrian families and extended its heartfelt condolences to the martyrs’ families, wishing a speedy recovery for the injured.”
It confirmed that relevant national authorities are closely monitoring the situation to assess the needs of the affected population and provide immediate required support and humanitarian relief.
The statement noted that competent authorities have launched comprehensive investigations to establish the full circumstances of the targeting.
Simultaneously, Syria has opened direct channels of communication with officials in Jordan to review the incident.
The Syrian government “underscored the imperative of joint field and security coordination regarding any actions along the border region, underlining the need to uphold the sovereignty of Syria and preserve the security and stability of both brotherly nations.”
Syrian authorities later shut the Nasib border crossing with Jordan in wake of the strikes.
Jordan said on Tuesday it was keen to safeguard its ties with Syria.
"Jordan holds great respect for the Syrian state and its brotherly people, and coordination between Jordan and Syria in fighting terrorism and weapons and drug smuggling is ongoing and has been for years," government spokesman Mohammad Al-Momani said.
On Friday, gunmen killed nine people during a funeral service at the Greek Orthodox St George's Church in the village of Hammoud in Karak governorate, southern Jordan.
Major General Abdullah al-Maaytah, Jordan's director of public security, on Monday named the three detained suspects as Hazza Zaidan Mohammed, Meshal Zaidan Mohammed and Ahmad Sami Hussein.
The trio, two of them brothers and the other related by marriage, were cornered at an abandoned house where they had barricaded themselves inside and opened fire on security forces.
"All three terrorists have been injured. They have been taken to hospital and are still receiving treatment," Maaytah told a press conference.
One of the suspects was in critical condition, Jordan's state broadcaster Al-Mamlaka reported. There were no casualties among the security forces, it added.
Jordan's King Abdullah II said in a post on X that security forces "chased them to the very end".
"We vowed the terrorists would not escape punishment, and no proponent of dark ideologies that divide Jordanians will be tolerated," he wrote.
Earlier, the king visited wounded victims of the church attack in hospital.
