CNN — Israel’s government has approved a large land seizure in the occupied West Bank – the biggest since the 1993 Oslo Accords set out a path for peace between Israel and the Palestinians, according to the Israeli rights group Peace Now.

The Israeli military’s Civil Administration department, which manages civilian matters in the West Bank, issued the declaration on June 25 converting the area into state land, according to a document from the body, but the official notice wasn’t posted until Wednesday, Peace Now said.

The declaration covers a 1,270 hectare (3,138 acre) section of the Jordan Valley in the eastern West Bank near Jericho, the document from the Civil Administration shows. Peace Now, an Israeli rights group that monitors illegal Israeli settlement expansion, criticized the move in a statement on Wednesday, saying that the seizure makes it even more difficult to establish “a Palestinian state alongside Israel.”

The group also noted that the latest declaration followed several previous announcements that have made this year the biggest, by far, for Israeli land seizures in the Palestinian territory, according to data it has collected that dates back to 1993.