Missouri Governor Jay Nixon urged people in the St. Louis area to show respect and restraint following a grand jury's decision on whether to criminally charge a white police officer in the August fatal shooting of an unarmed black teenager.
Prosecutors are set to announce the grand jury's decision on Monday. Authorities have stepped up security in and around Ferguson, Missouri, to guard against the kind of rioting that flared in the weeks after incident.
The death of 18-year-old Michael Brown, a resident of a predominantly black city with a white-dominated power structure, sparked weeks of sometimes violent protests in the St. Louis suburb and has become a flashpoint for strained US race relations.
"While none of us knows what that (decision) will be, our shared hope and expectation is that, regardless of the decision, people on all sides show tolerance, mutual respect and restraint," Nixon told reporters.