1999 mercury cougar no compression

[shaymirror]

Hi well I was driving south on I-75 my car started making this noise off and on I thought it was overheating or needed oil ,oil was fine waited a little bit started driving then started louder noise and lost compression it just kept going slower till it died then now I have it towed ,does it sound like oil pump?I just had cams and timing chain repaired last October ,the likage of chain had feel and plugged oil pan but I assumed was cleaned good . Thank You