Israeli forces killed at least three Palestinians in Khan Younis, Gaza, on Sunday, according to local health authorities. The deceased included a 15-year-old boy and two men. The Israeli military has not yet commented. Gaza's health ministry reports 420 Palestinians killed since an October ceasefire, with militants killing three Israeli soldiers. Both sides blame each other for ceasefire violations. Israel's prior military actions in Gaza have resulted in significant Palestinian casualties and accusations of war crimes, which Israel denies.