The "coalition leadership announces the end of the truce in Yemen starting from 1400" today, the alliance said in a statement carried by the official Saudi Press Agency.
The ceasefire announced on December 15 had been ended due to continuous rebel "attacks on the kingdom's territories by firing ballistic missiles towards Saudi cities, targeting Saudi border posts, and hampering aid operations," it said.
The rebels have also "continued to shell residents and kill and detain Yemeni civilians in cities under their control," said the coalition.
However, the coalition "was and is still eager on creating the suitable circumstances to find a peaceful solution in Yemen," it said.
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Saudi Arabia is leading a military coalition that has been battling Iran-backed rebels in neighbouring Yemen since March.
The rebels intensified their rocket attacks across the Saudi border in recent days, prompting the coalition to threaten severe reprisals.
The statement comes after the coalition announced that Saudi air defence forces had intercepted a ballistic missile fired from Yemen towards the kingdom's city of Abha yesterday.
The Saudis have deployed Patriot missile batteries designed to counter attacks and have recently been intercepting missiles fired from Yemen on an almost-daily basis.
More than 80 people, most of them soldiers and border guards, have been killed in shelling and cross-border skirmishes in the kingdom's south since coalition operations began in Yemen.
On Thursday, three civilians including two children were killed in cross-border missile attacks from Yemen on a residential area in Saudi Arabia's southwestern Jazan region.
Eleven others were wounded, among them nine children, according to the Saudi civil defence.