Taiwan accused China on Monday of trying to influence its presidential and legislative elections after the Solomon Islands cut off ties with Taipei.

The Solomon Islands was the sixth country to switch allegiance to China since President Tsai Ing-wen took office in Taiwan in 2016. Its decision on Monday dealt her a new blow in her struggle to secure re-election in January amid criticism of her handling of Beijing and rising tension with China.

Self-ruled Taiwan now has formal relations with only 16 countries, many of them small, less developed nations in Central America and the Pacific, including Belize and Nauru.