Singapore - Mexico's ambassador to Singapore Monday objected a decision by the government to impose visa requirements for Mexicans in light of the outbreak of swine flu in Mexico, media reports said.

Ambassador Juan Jose Gomez Camacho described the measures, which took effect last Saturday, as "unjustified and unnecessary."

"We simply believe that these special restrictions for travel, which is the visa, is not conducive to resolve or to prevent this virus from spreading and as always happens these kind of measures have unintended negative effects that we wish to avoid," Channel News Asia quoted the ambassador as saying.

"We have expressed that these are times where we need to cooperate, to work closely together, to show solidarity and not to impose measures that tend to isolate," Gomez said.

Before the decision, Mexicans did not require a visa to enter Singapore.

The ambassador said he called the Singapore Foreign Ministry on Thursday to express his views on the matter and followed up with a written complaint to the ministry on Monday morning.

Singapore is also quarantining people with a travel history to Mexico for seven days on their return to Singapore.

The embassy also objected to that requirement and urged the government to reconsider the measures, the report said. (dpa)