13 suspected militants have been killed by Egyptian military forces in an attack on a farm hideout in a desert region west of the country, Egypt’s Interior Ministry announced in a statement on Friday.

The incident occurred a week after a militant ambush on a police convoy killed dozens of officers.

The interior ministry offered no details on the affiliation of the militants, although they had largely been battling terrorists linked with ISIS in the area.

Since 2013, hundreds of the country’s security forces have been killed in battles in the northern Sinai Peninsula.

“They took a house in the farm as a temporary hideout faraway from security monitoring to receive newly recruited elements and train them and prepare the explosive devices,” read the official statement.

Thirteen bodies, along with weapons, explosive belts, cash and ammunition, were recovered from the hideout after the raid, the statement said.

The ministry failed to mention whether the militants that came under attack were connected with those that ambushed Egyptian police forces last week in Giza governorate.

“Security forces dealt a severe blow to the terrorist elements in revenge for the blood of the men who were martyred last week in the oasis,” state news agency MENA cited a senior security source as saying.