Projectile fired off east coast after three similar "provocations" a day earlier, South Korea's news agency says.
Li Keqiang's first foreign trip as prime minister aims to help settle border dispute and boost economic ties with India.
Move comes amid major offensive in three northeastern states against group seeking to create Islamic state.
Official media announces hanging of two men accused of gathering information for Israeli and US intelligence agencies.
Rafael Nadal dominated 30th meeting with Swiss rival Roger Federer to secure seventh title in nine years in Rome.
In Video
Programme Highlights
Inside Syria19 May 2013 11:32 GMT
We look at whether the abuses allegedly committed by Syrian opposition fighters are merely isolated incidents.
Listening Post18 May 2013 08:09 GMT
After the seizure of AP's phone records, we ask if the US is still the land of the free for journalists and sources.
In Depth
19 May 2013 14:45 GMT
Even moderates back group with hard-line fighters despite radical ideology in absence of Western help to topple Assad.
19 May 2013 14:49 GMT
Reconstruction of iconic Aboul Ela Bridge splits opinion with some complaining new design robs it of original identity.
Programmes
Featured
A four-part series that gives a rare insight into the country on the move, with history in tow.
Series on the Palestinian 'catastrophe' of 1948 that led to dispossession and conflict that still endures.
Two years since the start of the uprising, rebels and Assad's forces remain locked in conflict.
China aims to expand its influence in the resource rich area.
Extensive coverage of war crimes tribunals and controversial calls for blasphemy laws.
In Pictures
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