Crocodile enthusiast Bernard Seah, 49, said: "Many (in the community) think that aggressive development of the Malaysian coastline facing Singapore may have pushed out crocodiles in those areas, causing them to swim over the strait to Singapore."
But Mr Seah, who has volunteered at the Sungei Buloh reserve for nine years, stressed this was just a partial explanation and that it is hard to track their movements.
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