Detailed Instructions: Given a sentence in the Central Khmer, provide an equivalent translation in Japanese that retains the same meaning through the translation. In translation, keep numbers as it is.
Q: មូលហេតុនៃការធ្លាក់ថ្មគឺមិនដឹង តែនគរបាលបាននិយាយថាគ្មានសញ្ញាថាច្រាំងនោះអស្ថេរភាពទេ។
A:
落石の原因は不明だが、警察は崖崩れが起こりそうな兆候は無かったと述べている。