A man's body was discovered Thursday morning in a drainage ditch on Petaluma's west side, according to the Petaluma police.

The body, described by police as that of a white adult male, was found face down in standing water near the Town and Country Shopping Center, at Petaluma Boulevard North and West Payran Street. Police were withholding the man's identity pending notification of family members.

The cause of death was not reported. Petaluma police did not return calls Thursday seeking more information.