Fox News Channel has found itself somewhere it has rarely been the past decade — out of first place.

The network’s weekday prime-time lineup, long the king of cable news, finished behind MSNBC in viewers last week, the Nielsen company said. Among the 25-to-54-year-old audience that advertisers pay a premium for, Fox finished third to MSNBC and CNN for the first time in 17 years.

It was uniquely bad timing for Fox, a week filled with late-breaking news unflattering to President Donald Trump, who much of the network’s audience supports. But it also comes shortly after the firing of star anchor Bill O’Reilly, as Fox is trying to establish a new prime-time lineup.

Led by the red-hot Rachel Maddow show, MSNBC averaged 2.44 million viewers last week to Fox’s 2.41 million, Nielsen said. CNN had 1.65 million. It was only the second time in MSNBC’s history that it beat both of its news rivals in a week; the only other time was during the 2012 Democratic national convention.

Among the youthful viewers, MSNBC had 611,000 last week, CNN had 589,000 and Fox had 497,000.

When the weekend is added in — and the more flattering coverage of Trump’s first foreign trip — Fox moves back into first. And on this Monday, with the breaking news coverage of an attack at an Ariana Grande concert in England, Fox essentially doubled its rivals in viewership, with 3.37 million to CNN’s 1.74 million and MSNBC’s 1.65 million.