ST. LOUIS (AP) — The Latest on protests over the acquittal of a white former St. Louis police officer in the killing of a black suspect (all times local):

7:05 a.m.

Questions are being raised about a tactic police used to control St. Louis crowds during rowdy protests over the acquittal of a white former police officer in the shooting death of a black suspect.

At issue is a technique called kettling, which was used Sunday to corral people after windows were broken and trash cans overturned.

The St. Louis Post-Dispatch reports that some of those caught in the box made by rows of officers said police overstepped their bounds. They say police used excessive force on non-protesters, including reporters and residents trying to get home.

American Civil Liberties Union of Missouri attorney Tony Rothert says his office is "exploring whether litigation will be necessary." Police say anyone who wants to make a complaint can contact the Internal Affairs Division.

1 a.m.

Protesters gathered outside the jail in downtown St. Louis to show solidarity with those who remain behind bars, but there was no repeat of the vandalism that occurred over the weekend.

More demonstrations are expected Tuesday, four days after a judge found ex-officer Jason Stockley not guilty in the 2011 shooting death of 24-year-old Anthony Lamar Smith. Organizers did not give any details about Tuesday’s protests.

Smith’s mother, Anne Smith, was among those outside the jail on Monday.

St. Louis police say 123 people were arrested on Sunday, all but three of them for failure to disperse. More than 80 were arrested at one intersection, including a St. Louis Post-Dispatch reporter.

Sean Porter, a demonstrator who was released from jail Monday evening, says they couldn’t leave the intersection because police had blocked them in.