article_snippet: (CNN)Myanmar warplanes
article_snippet: fighting rebels dropped a bomb at a sugarcane field in China, killing four civilians, the latter's state media reported Saturday.
article_snippet: Shortly after the incident Friday, China sent fighter jets to patrol over fighter jets shared border.
article_snippet: fighter jets are there to "track, monitor, warn and chase away" Myanmar military planes, China's air force told state media.
article_snippet: China summoned Myanmar's ambassador in Beijing after the incident.
article_snippet: Liu Zhenmin, the vice foreign minister for China, called on Myanmar to investigate and bring those behind the attack to justice.
article_snippet: Myanmar forces have been battling ethnic separatist rebels in the rugged border region across from Yunnan province.
article_snippet: In recent incidents, stray gunfire has damaged property on the Chinese side of the border, prompting Beijing to warn Myanmar to ensure safety.
article_snippet: There was no immediate reaction from Myanmar.
highlights_snippet: China sends fighter jets to patrol over border with Myanmar following the incident .
  