Authorities in Iraq said two separate attacks against the country's security forces have killed seven soldiers and police officers, AP reported.Police officials say gunmen attacked a joint security checkpoint near Muqdadiyah town, killing five soldiers and wounding four.Muqdadiyah is 90 kilometers (60 miles) north of Baghdad.Also, police and hospital officials say militants attacked a police station near Fallujah, west of Baghdad, killing two police officers.