A 44-year-old man who is the leader of an ethnic minority group in Hong Kong was arrested last week over an alleged indecent assault and production of child pornography.

The arrest was made after some photos were posted on Facebook and Instagram of Lung Wai-man, chairman of Southern Democratic Alliance, showing him posing with ethnic minority girls in compromising positions, news website HK01.com reported.

The photos showed Lung carrying girls in his arms, some showed girls sitting on his lap facing him and one showed Lung lying behind a girl on a bed. The Southern Democratic Alliance was founded in 2004 with the aims of uniting South Asians with the local Chinese in Hong Kong.

A police report was received on May 15 about the photos with a number of children on social media. The crime investigation unit of Kowloon West Police Station then started an investigation.

Police interviewed several children and some revealed they had taken indecent photos and videos. Police arrested the suspect in Tsuen Wan in the New Territories on Friday. Two computers, a video camera, clothes and other items were confiscated. Indecent photos of two girls were found on the suspect’s mobile phone, Sing Tao Daily reported, citing police sources.

The End Child Sexual Abuse Foundation issued a statement on its Facebook page on Friday, saying the foundation had noticed some of the photos circulated on social media showing unnecessary physical contact of a senior management member of an ethnic minority group and children.

The photos could lead to association with child pornography and pedophilia, the group said. Although the children appeared willingly to be photographed, it did not mean the images were acceptable. The foundation also filed a police report on Friday.