Published: Sep 28, 2010 3:44 PM EDT
Updated: Sep 28, 2010 12:44 PM EDT

TAMARAC, Fla. (AP) - Authorities say ten people were killed in three different murder-suicides that rocked South Florida on the same day.

Shortly after 2 a.m. Monday, Riviera Beach police say 41-year-old Patrick Dell killed his estranged wife and four stepchildren before killing himself.

Hours later, 39-year-old Lena Mitiledessalines was found dead in her Lauderdale Lakes home where authorities say she moved to from the Philadelphia area to escape an abusive relationship. Her former boyfriend's body was discovered on the ground with a handgun nearby.

The Sun Sentinel and Palm Beach Post report that authorities later found an unidentified married couple dead inside their Tamarac home after conducting a welfare check. The husband had written in a letter saying he intended to kill them.