South Sudan's minister of information told the BBC on Friday that the cause of the incident was not clear.
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British Transport Police have begun an investigation into the cause of the incident.
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And the report it does carry avoids all speculation as to the cause of the incident, simply giving the bare facts as to the submarine's details and what the Ministry has so far reported.
The suspected cause of the incident, which occurred just before midnight Tuesday, is a cracked well casing.
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But safety investigators have not determined which event occurred first, or whether they were the cause or the effect of the incident.
We will post an update on this situation, including details on the root cause analysis at the end of this incident.
As worldwide exultation over the rescue begins to settle, more daunting tasks loomed -- understanding the cause of the August 5 collapse and ensuring such an incident doesn't recur.
The NTSB, which is investigating the Boston incident, hasn't yet determined the root cause of the fire and may never be able to do so.
The cause of a massive gas explosion that destroyed three homes is still unknown a year after the incident.
President Park was briefed about the incident shortly after it began and instructed her staff to seek the cause of the outages.
President Park Geun-hye was briefed about the incident shortly after it began and instructed her staff to seek the cause of the outages.
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