1.   In Grozny, the capital, a Russian armored personnel carrier was blown up by a land mine and shooting followed, witnesses said.

2.   Two stun grenades exploded during the advance, followed by shooting.

3.   The source of the explosion was not immediately clear, although residents of the area said they heard an explosion followed by shooting early in the morning.

4.   Residents of the area said they heard an explosion followed by shooting early in the morning.