SINGAPORE - Catch up on the morning's top business headlines in Singapore with The Straits Times Money Desk's daily update.

1. Markets tumble. Asian shares, the US dollar and oil prices sank Friday after a sell-off on Wall Street overnight on growing concerns about the global economy while the head of the IMF warned the eurozone could slip into recession if governments do not act.

2. Linc Energy queried. Mainboard-listed Linc Energy was queried by the Singapore Exchange for unusual price movements in its shares on Friday.

3. Olam staff on Ebola travel ban. Commodities trader Olam International has restricted its staff from travelling to parts of West Africa - Guinea, Liberia and Sierra Leone - that have been the worst-hit by the Ebola virus.