BEIRUT — The Israeli military on Thursday said its warplanes fired on southern Lebanon after detecting Hezbollah activity at a rocket storage facility, the first Israeli airstrike a day after a ceasefire between Israel and Hezbollah took hold.

Both Israel and Hezbollah on Thursday accused each other of violating a ceasefire deal agreed on the day before to end more than a year of fighting. Israel said it opened fire on ”suspects″ with vehicles arriving at areas in the southern zone of Lebanon,

The Israeli military said its air force struck a facility used by Hezbollah to store mid-range rockets in southern Lebanon on Thursday, after both sides accused each other of breaching a ceasefire that aims to halt over a year of fighting.