SASKATOON -- Saskatoon police say DNA tests are being done to determine if there's a connection between a man who disappeared during his stag party and someone who fell into a river.

Police say officers found blood when they were searching the edge of the South Saskatchewan River last weekend.

Witnesses saw a person fall in about half an hour after Gregory Myles MacIntosh was asked to leave a bar following a disturbance.

The 28-year-old man was reported missing at about 4 a.m. Sunday.

Police say their investigation has found no evidence of banking or cellphone activity and officers are waiting for DNA results from evidence found on the riverbank.

MacIntosh's family in his hometown of Lunenberg, N.S., has posted pleas on Facebook that ask anyone with information to contact police.