Within a week two more attacks appeared, but from them the doctors learned little.

The attack appeared to be part of a fresh drive to clear the area for oil exploitation.

The attacks appeared to have occurred in 2007 and 2008.

These attacks appear to evolve over several days to weeks.

Still, computer security experts continue to debate whether the attacks appear to be the work of one or more people.

Those attacks also appear to have been carried out by female bombers.

The attacks appeared to be aimed at Indian government officials and medical workers.

The attacks appear to be a result of steps toward peace in Congo.

The attacks do not appear to be coordinated, officials said.

The police said all the attacks appeared to be random.