>> Angela Merkel's open-door policy is back in the spotlight as Berlin police try to determine whether an asylum-seeker was involved in the Christmas market crash. Critics had been hitting back at the chancellor's stance on immigration that saw a million migrants and refugees enter Germany last year. Reuters' Paul Carol in Berlin says with an election coming up in 2017, Merkel's political opponents have been quick to bare their teeth.
>> Of course, the anti-immigrant, far right Alternative for Germany Party, which has really gained over the last year due to popular concerns about Merkel's migrant policy, has leapt on this. And one senior member of that party has blamed Merkel for the attack. And the leader of the party has said Germany's no longer safe and that radical Islamic terrorism has struck at the heart of Germany.
>> But Merkel's allies too are speaking out as the chancellor sees her popularity slide.>> On the right there's been this hardening of opinion. And this will, in all likelihood, embolden that right wing movement and make life tough for Merkel going into the election next autumn.>> Merkel's Christian Democrats Party still commands the most support, but not enough to take it for granted in next year's poll.