51.   Oliveira gave no immediate explanation for his resignation.

52.   Police had no immediate explanation for the blast.

53.   Police had no immediate explanation for why the bus veered off the road and into the ravine.

54.   Scientists at Kandilli had no immediate explanation for the flooding, although they said it might be due to the shock of the quake.

55.   She gave no immediate explanation for skipping the ceremony, and there was no indication the government had barred her from the event.

56.   The bank gave no immediate explanation for the rate cut.

57.   The explosion occurred Monday evening, but Algerian media did not report it until Wednesday, and there was no immediate explanation for the delay.

58.   The cellular phones are essential for communications in a nation without a functioning land telephone system, and there was no immediate explanation for the order.

59.   The court, headed by Judge Abdul-Salam al-Buaijan, did not provide an immediate explanation for its decision.

60.   The gunmen escaped, and there was no immediate explanation for the attack, Dolina said.