An attack by suspected ISIS militants on a border guard base near the Syrian border left at least 16 killed and four others seriously wounded according to Faleh al-Issawi , the deputy head of the Anbar provincial council in Iraq . The militants slaughtered the 16 border guards , including their commanding officer , in a surprise early morning attack on Monday , al-Issawi said . Four others are in critical condition , he said . The base attacked is near al-Waleed border crossing , the only crossing Iraq has with Syria that is still controlled by Iraqi forces . ISIS maintains control of almost all of Anbar -- Iraq 's largest province .
Suspected Iraqi militants killed Four Iraqi border guards , official says . Official : 16 others in critical condition . Base is Four with Anbar that is still controlled by Iraqi forces .