The report says such risks are focused mainly on particular sectors. 'The heavily indebted telecoms, media and technology (TMT) sector continues to raise particular concern throughout Europe and the US,' the Bank says. It points out that rating agencies have downgraded TMT companies such as Alcatel, Deutsche Telekom, Ericsson and Telefonica since the December issue of the review, with worries about the enormous debt burdens some of these companies faced now superseded by concerns about the businesses' commercial prospects.