An investor looks at the stock price monitor at a private securities company in Shanghai, China Monday, April 8, 2013. Asian stock markets were mostly lower Monday after a disappointing U.S. jobs report, although the Nikkei piled on more gains as the yen's dramatic fall boosted the country's powerhouse export sector. (AP Photo/Eugene Hoshiko)

Asian markets were mixed Monday following losses on Wall Street and after a survey indicated manufacturing activity in China was contracting at a faster rate than initial results suggested.

Traders are also keeping a nervous eye on the crisis in Ukraine, where unrest has spread from the east to the south while Russia has warned the country's leaders to halt a military operation against pro-Kremlin rebels.

Sydney ended flat, edging up 4.14 points to 5,462.2 while in the afternoon Hong Kong was 1.45 percent lower and Shanghai gave up 0.36 percent.

Tokyo, Seoul and Bangkok were closed for public holidays.

Banking giant HSBC said Monday its purchasing managers index (PMI) for China last month came in at 48.1, a tad up from the 48.0 in March but weaker than the 48.3 reported in its preliminary report on April 23.

The result adds to fears for the world's number two economy and key driver of global growth following a slew of weak data recently, including on trade and investment.

A figure below 50 indicates contraction while anything above points to growth.

Last week the government's official PMI reading came in at 50.4 for April from 50.3 in March.

Monday's figures showed domestic demand deteriorated at a slower pace but remained sluggish, while the new export orders and employment sub-indices both contracted, Qu Hongbin, a Hong Kong-based economist with HSBC, said in the statement.

“These indicate that the manufacturing sector, and the broader economy as a whole, continues to lose momentum,” he said.

Regional traders were given a negative lead from New York, where events in Eastern Europe overshadowed a better-than-expected jobs report.

Russia warned Ukraine of “catastrophic consequences” unless it ended a military operation against pro-Moscow secessionists in several towns in the east.

At the same time a new front looked to be opening up in the southern city of Odessa, where 38 people died in an arson attack against a trade union building on Friday.

President Barack Obama, speaking at the White House Friday after meeting with German Chancellor Angela Merkel, threatened “severe sanctions” if Russia did not alter course.

On Wall Street the Dow slipped 0.28 percent, the S&P 500 shed 0.13 percent and the Nasdaq dipped 0.09 percent.

US shares had started on a high after the Labor Department said the economy added 288,000 jobs in April, far above the 210,000

projected by analysts and the most in more than two years.

Coupled with upward revisions for the previous two months, the figures showed a firm rebound in hiring after a tepid winter pace that had spurred worries of a more fundamental downshift in activity.

On currency markets Monday the dollar bought 101.97 yen compared with 102.19 yen in New York on Friday.

The euro fetched $1.3875 against $1.3869, while it was also at 141.52 yen from 141.78 yen.

Traders will be scrutinising Federal Reserve chief Janet Yellen's testimony to Congress on Wednesday to see if she provides any clues about the state of the US economy and the bank's plans for it stimulus programme.

Oil prices were mixed. The US benchmark, West Texas Intermediate for June delivery, gained seven cents to $99.83 in afternoon trade, while Brent North Sea crude for June dipped 15 cents to $108.44.

Gold fetched $1,306.50 at 0630 GMT compared with $1,285.81 on Friday.

In other markets:

- Taipei was flat, nudging up 3.11 points to 8,870.43.

- Taiwan Semiconductor Manufacturing Co was 0.85 percent off at Tw$117.0 while leading chip design house MediaTek rose 1.58 percent to Tw$513.0.

- Wellington fell 0.62 percent, or 32.66 points, to 5,200.25.

- Contact Energy was down 2.41 percent at NZ$5.66 and Fletcher Building slipped 0.10 percent to NZ$9.76.