The California millionaire who was arrested last weekend for his wife’s 2012 slaying managed to elude capture for four years in Mexico by shacking up in luxury hotels and constantly moving around, police said Tuesday.

Peter Gregory Chadwick, 54, had been living under various aliases in Mexico since January 2015, when he skipped a pre-trial court hearing on charges he killed his wife in their home in Newport Beach, California, authorities said.

The real estate investor — who was on the US Marshals Service’s most-wanted list — allegedly strangled and drowned his wife, Quee Choo “Q.C.” Chadwick, on Oct. 10, 2012, as they fought over financial issues and a possible divorce.

“We believe Peter Chadwick has been in Mexico since his disappearance,” Newport Beach Police Chief Jon Lewis said. “He traveled throughout the country, never taking out a steady residence.”

The UK native fled with large sums of cash and had been staying at high-end hotels until the resorts started requiring passports, which he had to give up when he posted bail, authorities said.

He then began working odd jobs to supplement his cash and checked into more modest accommodations, such as motels and hostels, according to officials.

“Books he left behind showed that he had researched how to change his identity and how to live off the grid,” Lewis said. “He may not have had access to his passports, but we knew that he had the means to hide anywhere in the world.”

Lewis said police recently received a tip about Chadwick’s whereabouts and were able to narrow down his exact location.

Chadwick was arrested by local authorities late Sunday in Puebla, Mexico, in a community of expats. He was turned over to US law enforcement and arrived early Monday in California, authorities said.

“Investigators worked tirelessly to find Peter Chadwick and bring him to justice,” Lewis said.

Chadwick is being held in Newport City Jail after four years on the run, CBS2 reported.