floating the idea of a third-party presidential run. new images of idf forces pushing further into southern gaza as u.s. officials are now raising new questions and alarm over why hamas is refusing to release more female hostages. a home in arlington, virginia, blows sky-high. the blast could be felt miles away in d.c. police were there when it happened, trying to serve a search warrant. what were they looking for? details on that investigation ahead. i m sara sidner with john berman and kate bolduan. this is cnn news central. major rumblings in and around the republican race for president this morning starting with a huge push to get chris christie out. according to the new york times, republican donors, strategists, and pundits are publicly pressuring mr. christie to follow the lead of tim scott and mike pence and formally end his campaign. many would like to see him throw his support behind nikki haley. republican strategist kevin madden adds, ideally, it would