Kathmandu, 6 January : Nepal Army  has raised serious concern over what it called ‘suspicious activities’ on the part of China at the Sino-Nepal border in Mustang Breaching the agreement between Nepal and China, Chinese security forces are said to have frequently visited Lhomanthang, a uranium enriched area, in the pretext of maintenance where China has set up 17-kilowatt solar energy panels, according media reports. As per the agreement, China is supposed to do the maintenance of the energy panels until 2025. Concerned over  the Chinese activities, the Nepal Army has written to  the Defense Ministry recommending for the prompt establishment of a police post at Korala to check and monitor all suspicious activities  of Chinese security personnel. People's News Monitoring Service