BUZZ-Petroceltic: Falls to 6-yr low on bond suspension
** Irish oil producer Petroceltic International (LSE: PCI.L - news) falls more than 10 pct to 6-year low on suspension of bond programme
** Stock worst performer on the FTSE Intl-AIM 100 Index
** Co says volatile market conditions hampering completion of bond issue
** Co, which is focussed on North Africa and Black Sea regions, says it is unable to complete issuance of up to $175 million of senior secured callable bonds
(aashika.jain@thomsonreuters.com)