Tunisian Anis Amri

Tunisian Anis Amri, who drove a truck into a crowded Berlin Christmas market, took a selfie in front of Chancellor Angela Merkel's apartment in the weeks before the attack, sources close to the investigation confirmed Thursday.

German investigators searched a refugee centre and a flat in Berlin on Tuesday which they believe were homes to associates of the Tunisian man who killed 12 people in an attack in the capital before Christmas, the federal prosecutor's office said.

The Tunisian suspected of killing 12 people at a Berlin Christmas market was filmed by police in the city shortly after the attack and investigators believe he is still hiding in the German capital, media reported on Friday.

A brother of Tunisian Anis Amri, the prime suspect in a deadly truck attack on a Berlin Christmas market, urged him Thursday to surrender to ease pressure on his family.

The 100,000-euro ($104,000) reward for information leading to the arrest of Anis Amri, the Tunisian prime suspect in Berlin's deadly truck attack, is a rarity in Europe.

As police hunt for Tunisian Anis Amri, the top suspect in Berlin's Christmas market attack, public anger has grown over a catalogue of failures that allowed him to evade arrest or deportation.

Investigators found fingerprints of a Tunisian suspect in the Berlin Christmas market attack on the door of the truck that ploughed through the crowds, killing 12, German media said on Thursday, as a nationwide manhunt for the migrant was underway.

German authorities observed Tunisian truck attack suspect Anis Amri over a period this year to try to determine whether he had planned a robbery to fund the purchase of automatic weapons for a possible attack with accomplices, a judicial source in Berlin told Reuters on Wednesday.

Tunisian Anis Amri, who drove a truck into a crowded Berlin Christmas market, took a selfie in front of Chancellor Angela Merkel's apartment in the weeks before the attack, sources close to the investigation confirmed Thursday.

German investigators searched a refugee centre and a flat in Berlin on Tuesday which they believe were homes to associates of the Tunisian man who killed 12 people in an attack in the capital before Christmas, the federal prosecutor's office said.

The Tunisian suspected of killing 12 people at a Berlin Christmas market was filmed by police in the city shortly after the attack and investigators believe he is still hiding in the German capital, media reported on Friday.

A brother of Tunisian Anis Amri, the prime suspect in a deadly truck attack on a Berlin Christmas market, urged him Thursday to surrender to ease pressure on his family.

The 100,000-euro ($104,000) reward for information leading to the arrest of Anis Amri, the Tunisian prime suspect in Berlin's deadly truck attack, is a rarity in Europe.

As police hunt for Tunisian Anis Amri, the top suspect in Berlin's Christmas market attack, public anger has grown over a catalogue of failures that allowed him to evade arrest or deportation.

Investigators found fingerprints of a Tunisian suspect in the Berlin Christmas market attack on the door of the truck that ploughed through the crowds, killing 12, German media said on Thursday, as a nationwide manhunt for the migrant was underway.

German authorities observed Tunisian truck attack suspect Anis Amri over a period this year to try to determine whether he had planned a robbery to fund the purchase of automatic weapons for a possible attack with accomplices, a judicial source in Berlin told Reuters on Wednesday.