"We will have to wait and see how the situation develops", said Merkel.
She added this was also true for other detained Germans whose cases had not garnered as much public attention.
Although Merkel was interrupted for several times by whistles and jeers by thousands of protestors, Merkel made it clear in her speech that refugees were welcome in Germany and the year like 2015 would not repeat.
Merkel during the interview continued to defend that decision.
The chancellor has been holding rallies across the country for more than two weeks now, touting her 12-year record of halving unemployment, citing progress in the refugee crisis and pledging expanded broadband access.
Eurosceptics said Merkel's commentswere evidence of the EU's drive for more co-operation between the Member States, and that the United Kingdom was right to leave the bloc and maintain its independence. The arrival in Germany of a million refugees over the last two years, mainly from Syria and Iraq, opened deep rifts in Chancellor Angela Merkel's conservative party and is becoming a campaign theme ahead of a September 24 national election.
According to the latest opinion polls, the anti-migration and anti-euro AfD won around 10 percent of support rates from respondents, becoming the third runner on the support rate list.
"It's important that we don't go out of our way to avoid certain areas only because there are a bunch of people screaming".
She added, though, that this does not mean a political transformation in Syria is not needed.
Opposition has been particularly staunch in her home region in former communist east Germany.
He also accused Merkel of shying away from a real debate after she reportedly rejected a television network's proposals to change up the format to allow for more spontaneity when the pair face off next Sunday.
Responding to pressure from her opponent, Ms Merkel said she could envisage legislation to enable vehicle owners to file collective lawsuits against carmakers over excessively polluting diesel engines.
Both Schulz and Merkel announced plans to improve federal investment in infrastructure for schools, which is ordinarily a state issue but has become a hot campaign topic.
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