Three Bahraini troops were killed and others injured as battles between the Saudi-led coalition and the Houthi militants raged on the border between Saudi Arabia and Yemen, the Bahraini army said on Wednesday.
On Tuesday, Kuwait deployed troops to the border between the two countries to fight alongside the coalition's troops.
Moreover, a Bahraini F-16 fighter jet crashed in the Saudi Jizan city today, the coalition said.
A technical problem was behind the crash, it said, pointing out that the pilot survived and was admitted to hospital.
Meanwhile, Houthi media said the Houthi missile force fired two ballistic missiles into Saudi cities of Najran and Jizan, one of which the coalition shot down over Yemen.
Also, reports said the coalition escalated artillery attacks and airstrikes against Yemeni border cities in response to incursions and rocket attacks by the Houthis.
Civilians were killed and injured and public and private properties destroyed in Saada, according to the reports.
The coalition has been bombing Yemen since March in an effort to restore the legitimacy of the UN-backed government which was ousted by the Houthis in late 2014.
It comprised from the GCC member states except Oman, Egypt, Jordan, Sudan and Morocco and is receiving intelligence, naval and logistical support from the US, the UK, France, Turkey, Pakistan and others.
It has deployed thousands of troops to secure the Saudi-Yemeni border and others into Yemen to secure the regions retaken from the Houthis and support the government forces against the militants.