Merkel said on Wednesday that Turkish authorities' actions against freedom of opinion and the press are "highly alarming", referring to the detention of senior staff of daily Cumhuriyet.
The secular and independent Cumhuriyet, one of the last "opposition" news outlets still technically allowed to operate in Turkey, was accused by the government of running "subliminal messages" to encourage the coup and/or attempting to legitimize it after the fact.
Merkel said Germany will pay close attention to the investigation of the journalists.
"Brother, we won't take notice of your line".
Turkey has been engaged for a decade in slow-moving talks on ultimately becoming a member of the 28-nation bloc. "They always pose the question about the freedom of the press in our measures against terrorism", added the PM.
Almost 35,000 people have been arrested in Turkey and more than 100,000 people have been dismissed or suspended from government jobs since the failed coup in a bid to stamp out US-based cleric Fethullah Gulen's network, who has been blamed by Ankara for orchestrating the failed coup.
Ayse Yildirim, a columnist at Cumhuriyet who is not related to the prime minister, told The Associated Press that the newspaper would continue to publish blank columns until the managers and writers are released.
In a subsequent crackdown, more than 110,000 people have been sacked or suspended and 37,000 jailed pending trial, drawing criticism from Western allies and rights groups who fear Erdogan is using the coup attempt to crush dissent.
Since the attempted coup, 170 newspapers, magazines, television stations and news agencies have been shut down, leaving 2,500 journalists unemployed, Turkey's journalists' association said in a statement on Monday. Trustees have been appointed to several media organizations since October 2015 with alleged links to Gulen.
They are accused of playing a key role in a controversial anti-corruption probe late 2013 that targeted the upper echelons of government.
Turkey's President Recep Tayyip Erdogan addresses a meeting at his palace in Ankara, Turkey, Thursday, Nov. 3, 2016. News stories displayed here appear in our category for global and are licensed via a specific agreement between LongIsland.com and The Associated Press, the world's oldest and largest news organization.