LOS ANGELES - A mountaintop search was to resume on Saturday for an ex-policeman wanted in three California slayings, after authorities interrupted the manhunt during the night as snowfall kept their helicopters grounded.

Former Los Angeles officer Christopher Dorner, 33, has declared war on law enforcement officers and their families in a manifesto posted to the Internet that complains of his 2008 firing from the LAPD.

The hunt for Dorner has centered on the Big Bear Lake resort in the San Bernardino Mountains after his burning pickup truck was discovered in the area on Thursday. Authorities have acknowledged he may have slipped away undetected.

Snow fell late on Friday around Big Bear Lake, which is about 80 miles (129 km) northeast of Los Angeles. The temperature hovered at about 20 degrees Fahrenheit (-7 Celsius).

The San Bernardino County Sheriff's Department, which is leading the manhunt involving over 100 officers, said in a statement on Friday that because of the weather conditions it would not be sending aloft its helicopters equipped with infrared technology used earlier in the search.

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