WEEK IN REVIEW: Top news

Republican politicians descended on Nevada in preparation for Saturday's caucuses.

Mitt Romney, Newt Gingrich, Rick Santorum and Ron Paul made dozens of campaign stops and speeches, trying to rally voters to support them.

Nevada's caucuses took on added significance this year because they were the first held in the West and were expected to be competitive.

The events included Romney's endorsement by Donald Trump .

MONDAY

Legionnaires' reported

The Southern Nevada Health District reported bacteria that cause Legionnaires' disease were found in water samples at the Luxor after a former guest died of the form of pneumonia.

Officials said the case was one of three reported in the past year involving former guests. The resort's water was tested last spring, but no Legionella bacteria were found.

MGM Resorts began a program to purify the water system at the Luxor.

TUESDAY

Councilman survives

Las Vegas Ward 6 Councilman Steve Ross retained his job, defeating Planning Commissioner Byron Goynes in a recall election.

While Goynes said he wasn't connected to a recall committee, he benefited from its efforts. The group raised more than $120,000 , much of it from vintage car dealer Joe Scala, who was upset by the councilman's failure to support a waiver to let him operate in an area set aside for new car sales.

WEDNESDAY

Developer fires back

Gaming lobbyist and developer Harvey Whittemore filed a $60 million lawsuit against his former business partners, accusing them of making death threats, racketeering and extortion.

Whittemore's lawsuit alleges Thomas Seeno, Albert Seeno Jr., and Albert Seeno III defrauded him through their partnership, Wingfield Nevada Group Holding Co. The partnership oversees the Coyote Springs community and other companies.

Last week, the Seenos sued Whittemore, accusing him of embezzling and misappropriating more than $40 million from the company.

THURSDAY

Cops to be investigated

Federal authorities will delve into the use of deadly force by Las Vegas police.

The Justice Department's Office of Community Oriented Policing Services is expected to look at 20 years of shootings by officers, review department policies and procedures, and interview officers and civilians.

The review could take six months or more. A report will be released with recommendations.

It comes on the heels of an investigation by the Las Vegas Review-Journal into shootings and the use of deadly force by police. The department's officers shot and killed a dozen people last year, a record.

FRIDAY

Ruvo Center scores

Dr. Stanley Prusiner, who won the Nobel Prize in Physiology or Medicine in 1997 for his work in proposing an explanation for the cause of mad cow disease and its human equivalent, will become chairman of the scientific advisory board for the Cleveland Clinic Lou Ruvo Center for Brain Health.

Dr. Jeffrey Cummings, director of the center, said Prusiner's work may help unravel the mysteries of Alzheimer's disease.