LONDON (AFP) - The euro dived to a fresh 10-month dollar low with concerns over its future stoked further after a senior Chinese central bank official warned the Greek debt crisis was just the tip of the iceberg. The European single currency sank to 1.3283 dollars the lowest point since May 7, 2009. The euro later stood at 1.3349 dollars, up from 1.3315 dollars in New York late on Wednesday. Against the Japanese currency, the dollar dropped to 91.90 yen from 92.24 yen late on Wednesday. Analysts said the Chinese comments, and a debt downgrade for Portugal on Wednesday, suggested the crisis was widening to take in the entire eurozone project. The fact that Zhu Min, the deputy governor of the Peoples Bank of China, felt compelled ... to call the Greek debt crisis 'the tip of the iceberg, is as good an indication as any of how rapidly fundamental concerns are growing about the eurozone, said analyst Neil Mellor at Bank of New York Mellon. Indeed, this comment might well signal the point that we stop talking about a 'Greek debt crisis and start talking about a 'Eurozone structural crisis instead, Mellor added in a research note to clients. The Spanish EU presidency is seeking a European solution to help debt-laden Greece, a spokesman for Spanish Prime Minister Luis Rodriguez Zapatero said ahead of a European Union summit later Thursday. We are working on a European solution for Greece, Zapatero was quoted as saying as he arrived in Brussels for the start of the two-day EU summit later in the day. European leaders hope to seal a deal to help Greece out of its deficit crisis but possible intervention by the International Monetary Fund (IMF) is favoured by some, including German Chancellor Angela Merkel, and opposed by others. Greeces 15 fellow eurozone nations, including Spain which holds the EUs rotating presidency, have been seeking for weeks to agree how to help Athens deal with an unprecedented deficit crisis. Greece has already taken a string of austerity measures, prompting strikes at home, but appears unable to do all the heavy lifting alone. There are serious differences in approach among the eurozone partners. With divisions within the eurozone becoming deeper by the day it is hardly surprising that investors are involved in a major reassessment of one of the most favoured major currencies of the past decade, Mellor said. The euro tumbled on Wednesday after Fitch downgraded Portugals credit rating, stoking fears of a wider eurozone debt problem. In London on Thursday, the euro was at 1.3349 dollars against 1.3315 dollars on Wednesday, at 122.65 yen (122.84), 0.8916 pounds (0.8952) and 1.4285 Swiss francs (1.4283). The dollar stood at 91.90 yen (92.24) and 1.0704 Swiss francs (1.0726). The pound was at 1.4967 dollars (1.4871). On the London Bullion Market, the price of gold rose to 1,094.35 dollars an ounce from $1,090.75 an ounce on Wednesday.