The Interior Ministry said late Wednesday seven of its personnel were killed when armed attackers shot at them while policing a public square in Arish, North Sinai.
Those killed include three officers and four lower-ranking personnel. Security are combing the area for the attackers, said the ministry.
Hundreds of police and army personnel have been killed in attacks claimed by Islamic State affiliates in North Sinai since the ouster of the Muslim Brotherhood government in 2013.
The House of Representatives recently approved to extend the state of emergency and curfews in place since October 2014 at many areas of the province by three months starting January 27.