US manufacturing growth worst in six months

United State manufacturing sector grew at its slowest pace in six months during April, a survey has suggested.

Research firm Markit said the domestic market was the main source of weakness, offset by a rise in export production.

Markit's purchasing managers' index (PMI) fell to 52 from 54.6, remaining above the 50 level that marks the line between growth and contraction. 

Similar surveys released on Tuesday covering China and the eurozone also showed economic activity weakening.