Four of the five Thai students detained in Pakistan for trying to board a flight with a pistol and bullets have been released and are scheduled to arrive in Thailand at dawn today.
Pattani-based Tuan-Abdul-Rosoh Lorji, 28, was still being detained yesterday.
The other four will land in Thailand on Thai Airway's flight TG346.
National Security Council secretary-general Anusit Kunakorn repeated a statement by the deputy government spokesman that the students, who are doing a post-high school Islamic diploma, had no ties with the insurgency in the far South or Islamic State in Iraq and Syria.
He said he was not aware of news reports that stated the confiscated handgun had been given to the students by a Pakistan cleric and was intended for a cleric in the South.
He said an investigation was underway into Tuan-Abdul-Rosoh's claim that a stranger convinced him to put the disassembled handgun in his luggage.
An interview with the families of the five students unearthed nothing suspicious, but further scrutiny was needed, he said.
Deputy Prime Minister Prawit Wongsuwan said an initial investigation into the profiles of the five students showed they were clean.
He said the families feared the students would get involved with drugs so they sent them to Pakistan to study Islam at an individual cost of Bt3,000 (S$120) a month.
The confiscated weapon was a nine millimetre automatic pistol, he said.
The parents of one of the students, a 19-year-old, yesterday filed a petition with at the Damrongtham Centre in Krabi pleading for fairness for their son, saying that he was well behaved and not involved in the insurgency in the far South.
Members of a community in Nong Chik district where Tuan-Abdul-Rosoh was born and raised said |that they raised Bt2,000 every |month for his daily expenses while in Pakistan.
They also raised Bt23,000 for his air ticket when he first attended the Islamic school a few years ago.
Provincial Islamic chief, Waeduramae Mamingji, said that Tuan-Abdul-Rosoh was a religious person and wanted the diploma so he could become a cleric.
Tuan-Abdul-Rosoh did a visa run every two years and always returned home on every visa break, Waeduramae said.