Kevin Johnson

USA TODAY

Stephen Loomis, president of the local police union, said Cleveland is surging officers Monday night to Quicken Loans Arena for the NBA’s playoff game between the Cleveland Cavaliers and Indiana Pacers as part of a heightened security plan while authorities continue to search for the Facebook killer.

“People probably won’t notice anything different, but for every one uniformed officer there will probably be three (plain clothes officers) roaming through the crowd to look for anything unusual,’’ Loomis said.

Loomis said the city’s local casino also was upgrading its security in wake of public statements by the killer lamenting gambling debts.

A measure of the dragnet’s intensity, Loomis said, was marked Sunday night when so many officers joined the search that there weren’t enough patrol cars to accommodate them all.

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“We ran out of patrol cars,’’ Loomis said.

The killing has prompted a far-flung partnership involving local, state and federal authorities on a level not seen since last summer’s Republican National Convention, when authorities took unprecedented steps to secure the city against the prospect of violent protests. Those clashes never materialized.

Earlier Monday, Cleveland Police Chief Calvin Williams said that the security plan for Monday’s NBA game had accounted for the ongoing manhunt.

“We have all the usual security plans in place for the Cavs game and above that,’’ Williams said. “Everybody will be safe coming to the Cavs game.’’