Seattle Seahawks defensive end Frank Clark said his father and three other family members were killed in an arson fire in Cleveland last week.

My father was killed in an arson fire along with 3 other members of my family on the East Side of Cleveland. Pray for me and my family during this time, Clark tweeted Sunday evening.

My father was killed in an arson fire along with 3 other members of my family on the East Side of Cleveland. Pray for me and my family during this time. pic.twitter.com/bjXxHCRe4n

Clark retweeted a Jan. 30 post from the Cleveland Fire Department that said the bodies of four victims from a fire on the citys east side had been located and recovered.

The entire Seahawks family is mourning with Frank Clark and his loved ones after their tragic loss, the team said Sunday in a statement. Our thoughts and prayers will be pouring out to Frank and his family during their time of grieving.

The fire began at 1 a.m. last Tuesday and investigators are trying to determine the cause of the fire, according to Cleveland.com.

The victims were identified as Alfonso Lathan Jr., 46; his 3-year-old son, Alfonso Lathan III; his 8-year-old granddaughter, Nyiah Lathan; and his 44-year-old nephew, who was not named, according to Cleveland.com. Alfonso Lathans wife, Gianna Lathan, jumped out of a second-story window to escape the fire.

Clark, 24, was a second-round pick by the Seahawks out of Michigan in 2015. He has 22 sacks in three seasons with Seattle. In 2017, Clark recorded 32 tackles and nine sacks in 16 games.