KUALA LUMPUR, April 30 -- Malaysians should refrain from unnecessary movement both domestically and internationally even after the movement control order (MCO) lapses, said Datuk Dr Noor Hisham Abdullah.

The Health director-general credited part of Malaysia's success in containing the coronavirus disease (Covid-19) to effective border control, which he said could be negated if Malaysians start travelling abroad extensively.

"The most important thing was when we closed our borders. Today, we can see cases being imported from those returning to Malaysia from overseas - there are 154 positive cases. Border control is very important and under MCO phase four, it will be tighter.

"In terms of movement, we might be easing that but all sectors...