For the second time, abortion opponents are asking for a grand jury investigation into late-term abortions performed at Dr. George Tiller's clinic.

Kansans for Life turned in petitions with nearly 8,000 signatures to Sedgwick County Wednesday morning. The group wants the state to investigate more than 2500 late term abortions.

A grand jury investigation requires a petition of around 2400 or 2% of the registered voters in Sedgwick County. The signatures must be validated by the election commissioner. From there, Chief District Court Judge Michael Corrigan will either accept the case or appoint another district judge to handle the proceedings.

Kansas Attorney General Paul Morrison has already filed 19 misdemeanor counts against Tiller but the group wants more.

Tillers attorneys say Kansans for Life is just trying one more way to harass Tiller at taxpayers' expense.

The signatures are expected to be validated sometime next week.