Police put out rare all-points bulletin for murder suspect.

BEIJING, March 11 Kyodo

Chinese police, frustrated by false leads around the country, have put out a rare all-points bulletin for a 22-year-old man suspected of killing four people at Yunnan University in southwestern China last month, state media reported Thursday.

On Wednesday, the Public Security Ministry told provincial police bureaus via teleconference to step up the search for the suspect, Ma Jiajue.

Ma, a Yunnan University junior from the neighboring Guangxi Zhuang Autonomous Region, is suspected of using a hammer to bludgeon to death four male biology students in a dormitory room at the university Feb. 23, the People's Daily reported. The university is in Kunming, capital of Yunnan Province.

The killer put the bodies in dorm room closets but their stench attracted attention from passers-by, the newspaper said.

''A-level'' alerts in public venues, such as Beijing subway stations, call on the public to look out for Ma. Information on the March 10 bulletins includes Ma's height and age plus faded mug shots.

The alert lists Ma's personal identification number and the numbers of two victims whose ID cards Ma is suspected of stealing. Such notices rarely appear in Chinese public venues.

''Suspected Ma Jiajues from all areas have appeared several times, making everyone sweaty, yet the real Ma Jiajue in the end has not dropped into sight,'' an article in the Hangzhou-based Metropolitan Express newspaper said Thursday.

Yunnan provincial police are offering a 150,000 yuan (about

$18,000) reward for clues about the murders, and the Beijing bulletins offer 200,000 yuan to anyone with ''accurate information.''