HOUSTON -

A family feud over money may be the motive in an alleged murder-for-hire plot in which a man tried to have his two sisters killed, according to investigators.

Claire Wolf, 66, has been charged with solicitation of capital murder.

According to court records, Wolf tried to hire a county jail inmate to kill his sisters, Vennie and Elizabeth Wolf. The siblings have been locked in a bitter fight over a family inheritance.

According to investigators, Wolf is also charged with aggravated assault in a pipe bomb attack on Vennie Wolf in July 2010. She was peppered with shrapnel when a package containing the bomb exploded after she tried to open it.

Wolf has been in jail for the last two years, after he was arrested for illegal dumping and other environmental offenses.

Clair Wolf faces up to life in prison if convicted.