Six South Sudanese journalists have been detained for releasing a video of President Salva Kiir urinating on him during an official event, the national union of journalists said on Saturday.

The December photos show a dark stain appearing on the president’s gray pants, which is growing, and a small puddle appears near his feet. At one point, the 71-year-old leader even looks down.

The incident occurred during the performance of the national anthem at the start of the road.

The video was never broadcast on television, but later went viral on social media.

Journalists working for the South Sudan Broadcasting Corporation were detained on Tuesday and Wednesday, said Patrick Oyet, president of the Union of South Sudan Journalists.

“They are suspected of knowing how the video of the president urinating on him came out,” he told Reuters.

South Sudan’s Information Minister Michael Makuei and National Security Service spokesman David Kumuri did not immediately respond to requests for comment.

Kiir has been South Sudan’s president since independence in 2011.

Government officials have repeatedly denied rumors circulating on social media that he is bad. The country has been embroiled in conflict for most of the past decade.

“We are concerned that those currently detained are being held longer than the law requires,” he added.

Under the law, South Sudanese authorities are only allowed to detain suspects for 24 hours before they appear before a judge.

The incident “fits into a pattern of arbitrary detention by security officials whenever officials deem the coverage of a topic objectionable,” said Sub-Saharan African Committee to Protect Journalists Mutoki Mumo.