( CNN ) Coalition airstrikes again pounded ISIS positions in Iraq and Syria on Saturday , including at least a dozen strikes on Mosul , where anti-ISIS forces have been trying to weaken targets ahead of an anticipated fight to wrest Iraq 's second largest city from the terror group . A CNN crew watching from Kurdish positions on Mount Zartak , to the southeast of Mosul , saw at least 12 blasts in the city and heard jets streaking overhead . ISIS swept into Mosul in June , with Iraqi forces at the time largely fleeing the advance . The Sunni Muslim terror group , also called the Islamic State in Iraq and Syria , folded Mosul into what it calls its Islamic caliphate -- territory that it has captured in both countries . Kurdish forces , which protect a Kurdish autonomous region in northern Iraq , recently have been trying to surround Mosul to cut off ISIS 's lines of supply from Syria , setting up what could be an eventual assault to try to expel the terror group from the city . Iraqi ground forces could begin a move to retake the city as soon as April , a U.S. Central Command official told CNN earlier this week . Kurdish forces say the frequency and intensity of airstrikes on Mosul have increased sharply since Tuesday , when ISIS released a video showing its fighters burning to death a Jordanian captive pilot , Lt. Moath al-Kasasbeh , who was captured in December after his jet crashed in Syria . ISIS defenses in Mosul could be trigger for U.S. ground troop recommendation . Airstrikes also hit ISIS targets near the terror group 's de facto capital of Raqqa , Syria , on Saturday , anti-ISIS activists there said . At least 10 explosions were reported Saturday in Hazema , north of Raqqa , and six other strikes happened in Tabqa to the west , the activist group `` Raqqa is Being Slaughtered Silently '' said on Twitter . Jordan , one of Syria 's southern neighbors , again sent its jets to strike ISIS targets Saturday , and all of the jets returned safely to their bases , Jordanian state-run TV reported . Jordan , which has promised revenge for al-Kasasbeh , has publicly pressed to participate in more of the coalition 's airstrikes against ISIS in Syria . U.S. and coalition aircraft conducted 11 airstrikes over Syria and 15 airstrikes over Iraq from 8 a.m. Friday to 8 a.m. Saturday , the U.S. military said . ISIS declared it had established a caliphate spanning Iraq and Syria last year . Since then , it has gone on a murderous rampage that has included beheadings of foreigners . Hundreds of thousands of Iraqis and Syrians have fled areas it has seized . The United States , along with European and Arab nations , began airstrikes against the terror group last year . ISIS militants have destroyed a bridge they recently used to assault Iraq 's oil-rich Kirkuk city -- a possible attempt to hinder a counterattack against them , a Kurdish political and military leader said Saturday . About 30 kilometers southwest of Kirkuk , ISIS late Friday blew up a bridge that helps connect an ISIS-held area to the city , said Saman Jabari , a senior Kurdish political leader who also commands Kurdish Peshmerga troops near Kirkuk . ISIS had used the bridge to reach the Kirkuk area in a surprise attack on January 30 , Jabari said . Kurdish troops have counter-attacked since . As the coalition 's struggle against ISIS continued in northern Iraq , a pair of suicide bombings on Saturday killed at least three dozen people hundreds of kilometers to the south in Iraq 's capital , Baghdad , a police source in the city said . An attacker blew himself up at a busy restaurant in southeastern Baghdad 's Al-Jadida neighborhood , killing at least 30 people and injuring 66 others , the police source said . In the center of the city , a different suicide bombing at a market killed six people and injured 28 others , the source said . Information about who was responsible for the bombings was n't immediately available . CNN 's Phil Black reported from Iraq 's Mosul area . CNN 's Jason Hanna and Yousuf Basil reporte and wrote from Atlanta .
Coalition executed 11 airstrikes over Syria , 15 airstrikes over Iraq Friday into Saturday , U.S. says . At least 12 airstrikes target ISIS-held Mosul , Iraq 's second-largest city , CNN crew sees from afar .