PORT-AU-PRINCE, Haiti, Jan. 28 (UPI) -- The European Union's ambassador to Haiti said reconstruction work there has halted because international aid teams are worried about political violence.

The results of a first-round presidential election have been disputed, although preliminary results put Mirlande Manigat, wife of former President Leslie Manigat, and Jude Celestin, representing the governing Inite Party, in the two top spots -- denying Michel Martelly, a popular singer and opposition leader -- a place in the run-off.

"Everybody is on standby for the moment because we don't know whether violence will break out or whether we will have a stable counterpart do discuss with," Ambassador Lut Fabert-Goosens told EUobserver.

The Jan. 12, 2010, earthquake killed 200,000 people. An estimated 1 million people are living in temporary camps around Port-au-Prince and a recent cholera outbreak killed about 4,000.

Fabert-Goosens suggested the political uncertainty is a bigger problem than the epidemic. She said people are dying needlessly because medical help is not available.