As of now, no one has claimed responsibility

So far, no terrorist group has claimed responsibility.

First of all, no group has claimed responsibility yet

but as of yet, no one has claimed responsibility

No one in the undercity has claimed responsibility yet.

has claimed responsibility for the terrorist act.

So far, no one has claimed responsibility for this attack.

No one has claim.

is claiming responsibility for the attack.

they'll know that the CIA is responsible,

has claimed responsibility for the bombing moments ago...

The IRA has, I'm afraid, already claimed responsibility.

No-one has yet claimed responsibility for what sources are calling

How come the CIA has never discovered

How come the CIA has never discovered

but there's been no claim of responsibility