By James Hibberd
Updated April 19, 2013 at 10:29 PM EDT
Cnn Manhunt

Cable news network ratings showed an across-the-board surge this week in the aftermath of Monday’s tragic bombing attack during the Boston Marathon.

From Monday through Thursday, CNN, Fox News and MSNBC all had sharp viewership increases compared to the previous week.

Fox News had the highest total-day viewership (1.6 million viewers; 419,000 viewers 25-54), followed by CNN (1 million viewers; 403,000 adults 25-54) and MSNBC (500,000 viewers; 161,000 25-54). In prime-time, the standings were the same, though naturally the viewership was much higher: Fox News (2.8 million viewers), CNN (1.6 million) and MSNBC (974,000).

Compared to the previous week, CNN showed the biggest increase, percentage-wise, with total day viewership spiking 194 percent. Fox News was up 48 percent and MSNBC rose 37 percent. When stacked against the previous four weeks, CNN was up 269 percent; Fox News up 41 percent; MSNBC rose 31 percent.

In addition to the ongoing cable news coverage, broadcast networks ABC, CBS and NBC have scheduled special prime-time coverage tonight of the ongoing manhunt for Dzhokar Tsarnaev, the remaining bombing suspect.