Dominican police issued a statement saying people weren't expelled from the country, but rather went to the police station because they feared reprisals and asked authorities to escort them to the border so they could cross it themselves.
Jonave Celeny was among those who went to the police station on his own accord.
Carrying a backpack and a gym bag, the 34-year-old construction worker said he relied on a Dominican friend to take him to the police station while others opted to lie low because they were scared of being lynched.
"Many of us had to go into hiding," Celeny said Monday afternoon.
He spoke before boarding a government bus that was taking him and a couple dozen others to a bus station. He planned to catch a bus to his Haitian hometown of Thomazeau, a lakeside community near the border where his wife and four children live. He said he wanted to leave the Dominican Republic until things cooled but planned to go back as soon as possible.
There have been no additional reports of people being killed in Neiba.
Gerpis Suero, of the Jesuit Service for Refugees and Migrants, told The Associated Press from the Dominican border town of Jimani that some people did go on their own to the border, terrified they could be harmed by mobs seeking revenge. Others approached military posts only seeking protection, he said.
Haiti and the Dominican Republic have had a long and volatile relationship as neighbors on the Caribbean island of Hispaniola.
The Dominican Republic was among the first countries to respond after the devastating 2010 earthquake in the Haitian capital and has helped with reconstruction.
But relations have been tense in recent weeks following a ruling by a Dominican court ruling that upheld a provision of the Constitution denying citizenship to non-citizens and their descendants and ordered the government to purge the voter rolls of non-citizens. Migrant advocates say the ruling may strip citizenship of 200,000 people, but the government says fewer people will be affected and has sought to dispel fears of mass deportations.
The Dominican government said it has a program to resolve the status of such residents but has not released the details.
Caribbean leaders will hold a special emergency meeting in Trinidad on Tuesday to discuss the Dominican court ruling and issue a response to the move.
St. Vincent and the Grenadines Prime Minister Ralph Gonsalves has been an outspoken critic of the ruling and will attend the special session of the Caribbean Community. Haitian President Michel Martelly is also expected to be there.
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Associated Press writer Ezequiel Abiu Lopez in Santo Domingo, Dominican Republic, contributed to this report.
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Trenton Daniel on Twitter: http://twitter.com/trentondaniel