1 Samuel 31:2

And the Philistines overtook Saul and his sons , and the Philistines struck down Jonathan and Abinadab and Malchi-shua , the sons of Saul .

The Philistines were in hot pursuit of Saul and his sons, and they killed his sons Jonathan, Abinadab and Malki-Shua.

And the Philistines followed hard upon Saul and upon his sons; and the Philistines slew Jonathan, and Abinadab, and Malchi–shua, Saul's sons.