TEGUCIGALPA, September 1, 2009 (AFP) - Assailants lobbed a bomb from a vehicle Tuesday, blowing out windows at a truck and tractor dealership, police said, in a jarring wakeup call in this politically troubled Central American capital.

There were no injuries in the early morning blast at the business near Tocontin International airport, police said.

There was no known motive, according to police.

But the owner, Eduardo Atala, insisted the attack "shows how divided this society is," amid the political crisis sparked by the June 28 military coup that ousted elected President Manuel Zelaya.

There was a fire meanwhile at a Radio America broadcast tower in Toro department, and authorities were investigating whether it might have been arson, local media reported.

Two weeks ago, assailants attacked television and radio offices opposed to the de facto regime in place since Zelaya's ouster.

Meanwhile US Secretary of State Hillary Clinton is to meet Thursday in Washington with Zelaya to discuss the deadlock following his ouster, her spokesman said Tuesday.

The United States has been piling pressure on Honduras coup leaders since after they rejected a settlement, with plans in the works to cut off nearly $150-million in US assistance.