There had been a sharp increase daily in the number of outsiders entering rural districts like Baram, a part of his constituency, said the Ngau, who is from the ruling Parti Pesaka Bumiputra Bersatu (PBB).
"I'm worried about the sharp rise of outsiders into Ulu Baram and other rural frontiers in recent days.
"I don't know if these outsiders are coming for social visits or for political purposes.
"I found out there are people coming into Baram from as far away as Lawas district. Whether it's for social or political reasons, there should be a stop to such free-flow influx of outsiders.
"This is especially so during this current Covid-19 pandemic," he said.
Ngau said he had contacted the police to ask them to set up roadblocks to check the identities of these outsiders.
He said there was a need to also check the visitors' health status.
Ngau said the recent case of a native villager from Kg Padalih found positive with Covid-19 was a stern reminder that strict control was a must when it came to entering and leaving rural areas.
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