A graft probe into the luxury watch collection of Thailand's junta number two was dropped Thursday, sparking the ire of the public and political opponents of the military.

The country's anti-corruption agency cited "no grounds" for an investigation into the scandal surrounding Prawit Wongsuwan's penchant for pricey timepieces, which captivated the kingdom earlier this year and drew criticisms in a rare lightning rod of dissent as the Thai public grew weary after four years of military rule.

The 73-year-old was caught last December wearing a luxury watch in a photo, inspiring online sleuths to dig up old photos of at least 22 watches collectively worth USD 1.2 million on his wrist, including 11 Rolexes, eight Patek Philippes and three Richard Milles.

Questions arose over how a general on a relatively humble public servant's salary could afford items undeclared on his USD 2.7 million list of assets on taking office, leading the kingdom's anti-graft agency to open a probe into his wrist bling.

The National Anti-Corruption Commission (NACC) announced Thursday in a press conference its eight-person committee voted 5-3 to dismiss the case.

"This case has no grounds that General Prawit Wongsuwan had intended...to hide the truth or had intended to hide the origins of such assets," said NACC deputy secretary-general Worawit Sukboon.

The investigation found that all the watches adorning Prawit's wrists belonged to his now-deceased friend, wealthy businessman Pattawat Suksriwong.

"He had also lent his luxury watches to his other friends."

Worawit added the NACC is still investigating if the general had breached the commission's rules for accepting assets worth 3,000 baht (USD 92).

Prawit, who is defence minister, was one of the architects of the 2014 coup toppling the government of then-premier Yingluck Shinawatra.

The National Council for Peace and Order (NCPO), the junta's political name, has long wielded its anti-corruption credentials while junta leader Prayut Chan-O-Cha has voiced an interest in returning to politics as the country looks toward elections slated for February 24.

Thailand's biggest party Pheu Thai -- which was headed by deposed premier Yingluck and her brother Thaksin -- blasted the anti-graft commission's decision.

"We believe it is a double standard. The fact is that (Prawit's) actions violated laws and his reasons are groundless," said party spokeswoman Ladawan Wongsriwong.

Upstart Future Forward Party called the anti-graft agency a "tool" for the NCPO.

"It emphasises the need to get rid of the NCPO and Prayut," spokeswoman Panika Wanich said.

But political analyst Titipol Phakdeewanich told AFP the public's dissatisfaction with the verdict is unlikely to carry in the polls.

"No matter what the public say or how angry the people are, it wouldn't change anything," said Titipol, dean of Ubon Rachathani University's Faculty of Political Science.

"The military still controls everything, every channel of information."

The scandal inspired a round of creative protests. In February, Thai students in a pre-football match ceremony in Bangkok wheeled a series of parade floats that including a puppet with a glittering ring and watch beaming from a massive papier mache hand.

"All 22 watches, all borrowed from a friend -- his friend must have a shop selling watches," said a commenter on an online website after Thursday's verdict.

(This story has not been edited by Business Standard staff and is auto-generated from a syndicated feed.)