CAIRO, Jan 12 (Aswat Masriya) - Security forces arrested on Monday two men accused of opening fire at a security unit in al-Mohandeseen district in Giza, killing a police officer and wounding three security personnel, Giza Security Head, Kamal al-Daly, said.

Two unidentified gunmen shot a police officer and injured three security personnel, who were part of a security unit tasked with securing HSBC bank, in Sphinx Square in Giza on December 27, 2014, in a drive-by shooting.

The defendants were arrested amongst a cell formed of more than 10 members who execute "terrorist" operations in Giza, Daly added to Aswat Masriya.

Sound bombs, molotov cocktails, and military uniforms were among the possessions found in the flat where the cell convenes in Boulaq al-Dakrour district, according to Daly.