Sarayuth said Kritsana had been very cooperative and police had not filed charges against him, as he was not yet a suspect.
The colonel also said the victim, Issarajnuwat Wakkawisan, 23, had already told police what had happened and filed a complaint. Saying that police would summon everyone involved to testify, he added that investigators were still gathering evidence.
While Kritsana was being interrogated, the owner of Malin Sky pub where the brawl took place, Thanin Lert-amrungkul, also appeared to testify.
Three employees at Malin Sky – identified as Thanandon Mansawaeng, 23, Adisak Penglek, 20, and Apiwat Na Lamphun, 21 – also surrendered to police shortly after midnight yesterday. Their lawyer Sant Kawichai escorted them to Chang Puak Police Station.
Despite claiming that they had no knowledge of the assault, they were initially charged with an attack resulting in injuries before being released.
Issarajnuwat, a fourth-year student at Payap University and son of 38th Army Circle commander Maj-General Witthaya Wakkawisan, suffered a broken nose, two cracked teeth, a fractured jaw and a bruised left eye. He was reportedly stopped from using a washroom that celebrities were using before the altercation broke out.
He is being treated at Lanna Hospital.
Malin Sky has been closed since the incident.
Pol Maj-General Churat Pan-ngao, acting deputy chief of Provincial Police Region 5, told a police meeting later yesterday that four suspects had surrendered, including a security guard at the pub, Thanomsak Pipatkijjakan, 43, who confessed to attacking Issarajnuwat by himself.
Churat said all four were initially charged for assault resulting in injury, adding that police would ensure justice for all sides.