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Investigators have narrowed the time frame of a quadruple murder in the Cypress area to 28 hours in the last weekend of January, Sheriff Adrian Garcia said today as the reward for information leading to the arrest of a suspect was raised to $70,000.

Mei Xie, her husband Maoye Sun and sons Titus and Timothy Sun were killed in their house between 7 p.m. Friday, Jan 24, when the husband left work, and 11 a.m. Saturday, Jan. 25, when the boys failed to appear at a Boy Scouts event, the sheriff said. The bodies were discovered Jan. 30.

Release of the timing information and the reward increase are part of an intensified effort to elicit more information from the public that could help lead investigators to the killer or killers. The public can report tips anonymously or not to Crime Stoppers of Houston at 713-222-TIPS, by any language through the HCSO iWatchHarrisCounty free phone app or to the HCSO homicide division at 713-967-5810.

Details that may have seemed trivial at the time may be important now, the sheriff emphasized as he urged people to come forward with clues while investigators await crime lab results on evidence gathered at the scene.

"WHO KILLED THE SUN FAMILY? $70,000 REWARD" is the Crime Stoppers message, along with a photo of the Suns (attached), appearing now on digital billboards provided by Clear Channel Outdoor. The image will be shown in the Houston area and other major Texas cities.

Sheriff Garcia, representatives of the Houston Chinese Alliance and Crime Stoppers and Clear Channel unveiled the billboards at a news conference today near where the Suns lived. The Suns were Chinese-American.

The HCSO is working with the FBI and other law enforcement agencies to solve the murder puzzle, according to the sheriff.

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For more information please visit www.iWatchHarrisCounty.com.

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