Four more hostages were found dead in Gaza on Monday, including three elderly men who were previously spotted in a video released by the terrorist group Hamas, according the Israeli military.

Amiram Cooper, Yoram Metzger and Haim Peri, were more than 80 years old, according to reports. 

In December, Hamas publicly released a video called, “Don’t let us grow old here" that included the 3 men.

The additional hostage found dead was Nadav Popplewell. The cause of the deaths has not been determined, according to an Israeli military spokesman.

Hamas attacked Israel on Oct. 7, killing about 1,200 Israelis and taking hostages.