A stretch of security fencing along the border that separates the US from Mexico is to be rebuilt, the country's federal government has said.

US Customs and Border Protection (CBP) said work to replace the 2.8 miles of outdated security fencing in Arizona will begin later this month and is scheduled to finish in September this year, abc15.com reports.

The CBP said it hopes the new fencing, which will be higher than the old section, will reduce the flow of illegal immigration given its new height.

Current ten foot "landing mat" fencing, originally put up in 1994, will be replaced by "bollard fencing" measuring 18ft.

The news provider said studies show that landing mat fencing has become obsolete given it is easy to cut through with power tools.

In January, the US government confirmed it would scrap its much-vaunted, billion dollar "virtual" security fencing border project.

Technology glitches, delays and extra costs had all hampered the programme.ADNFCR-3337-ID-800439038-ADNFCR